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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `C:\Users\zenn\.cargo\registry\src\index.crates.io-6f17d22bba15001f\heapless-0.7.16\src\linear_map.rs`."><title>linear_map.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-cb6f1f67f1bcd037.css" id="mainThemeStyle"><meta name="rustdoc-vars" data-root-path="../../" data-static-root-path="../../static.files/" data-current-crate="heapless" data-themes="" data-resource-suffix="" data-rustdoc-version="1.73.0-nightly (8131b9774 2023-08-02)" data-channel="nightly" data-search-js="search-6dfdfced5eff6596.js" data-settings-js="settings-de11bff964e9d4e5.js" data-settings-css="settings-8c76f75bfb6bd192.css" data-theme-light-css="light-6d2c9675f3d09c26.css" data-theme-dark-css="dark-45ceb8f2e522f4d1.css" data-theme-ayu-css="ayu-fd19013d6ce078bf.css" ><script src="../../static.files/storage-db41da1a38ea3cb8.js"></script><script defer src="../../static.files/src-script-3280b574d94e47b4.js"></script><script defer src="../../src-files.js"></script><script defer src="../../static.files/main-0795b7d26be81095.js"></script><noscript><link rel="stylesheet" media="(prefers-color-scheme:light)" href="../../static.files/light-6d2c9675f3d09c26.css"><link rel="stylesheet" media="(prefers-color-scheme:dark)" href="../../static.files/dark-45ceb8f2e522f4d1.css"><link rel="stylesheet" href="../../static.files/noscript-cffde32267a19fd6.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc src"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../heapless/index.html"><img class="rust-logo" src="../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><div data-nosnippet><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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<a href="#419" id="419">419</a>
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<a href="#421" id="421">421</a>
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|
||
<a href="#423" id="423">423</a>
|
||
<a href="#424" id="424">424</a>
|
||
<a href="#425" id="425">425</a>
|
||
<a href="#426" id="426">426</a>
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||
<a href="#427" id="427">427</a>
|
||
<a href="#428" id="428">428</a>
|
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<a href="#429" id="429">429</a>
|
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<a href="#430" id="430">430</a>
|
||
<a href="#431" id="431">431</a>
|
||
<a href="#432" id="432">432</a>
|
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<a href="#433" id="433">433</a>
|
||
<a href="#434" id="434">434</a>
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|
||
<a href="#436" id="436">436</a>
|
||
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|
||
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|
||
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|
||
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|
||
<a href="#441" id="441">441</a>
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||
<a href="#442" id="442">442</a>
|
||
<a href="#443" id="443">443</a>
|
||
<a href="#444" id="444">444</a>
|
||
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|
||
<a href="#446" id="446">446</a>
|
||
<a href="#447" id="447">447</a>
|
||
<a href="#448" id="448">448</a>
|
||
<a href="#449" id="449">449</a>
|
||
<a href="#450" id="450">450</a>
|
||
<a href="#451" id="451">451</a>
|
||
<a href="#452" id="452">452</a>
|
||
<a href="#453" id="453">453</a>
|
||
<a href="#454" id="454">454</a>
|
||
<a href="#455" id="455">455</a>
|
||
<a href="#456" id="456">456</a>
|
||
<a href="#457" id="457">457</a>
|
||
<a href="#458" id="458">458</a>
|
||
<a href="#459" id="459">459</a>
|
||
<a href="#460" id="460">460</a>
|
||
<a href="#461" id="461">461</a>
|
||
<a href="#462" id="462">462</a>
|
||
<a href="#463" id="463">463</a>
|
||
<a href="#464" id="464">464</a>
|
||
<a href="#465" id="465">465</a>
|
||
<a href="#466" id="466">466</a>
|
||
<a href="#467" id="467">467</a>
|
||
<a href="#468" id="468">468</a>
|
||
<a href="#469" id="469">469</a>
|
||
<a href="#470" id="470">470</a>
|
||
<a href="#471" id="471">471</a>
|
||
<a href="#472" id="472">472</a>
|
||
<a href="#473" id="473">473</a>
|
||
<a href="#474" id="474">474</a>
|
||
<a href="#475" id="475">475</a>
|
||
<a href="#476" id="476">476</a>
|
||
<a href="#477" id="477">477</a>
|
||
<a href="#478" id="478">478</a>
|
||
<a href="#479" id="479">479</a>
|
||
<a href="#480" id="480">480</a>
|
||
<a href="#481" id="481">481</a>
|
||
<a href="#482" id="482">482</a>
|
||
<a href="#483" id="483">483</a>
|
||
<a href="#484" id="484">484</a>
|
||
<a href="#485" id="485">485</a>
|
||
<a href="#486" id="486">486</a>
|
||
<a href="#487" id="487">487</a>
|
||
<a href="#488" id="488">488</a>
|
||
<a href="#489" id="489">489</a>
|
||
<a href="#490" id="490">490</a>
|
||
<a href="#491" id="491">491</a>
|
||
<a href="#492" id="492">492</a>
|
||
<a href="#493" id="493">493</a>
|
||
<a href="#494" id="494">494</a>
|
||
<a href="#495" id="495">495</a>
|
||
<a href="#496" id="496">496</a>
|
||
<a href="#497" id="497">497</a>
|
||
<a href="#498" id="498">498</a>
|
||
<a href="#499" id="499">499</a>
|
||
<a href="#500" id="500">500</a>
|
||
<a href="#501" id="501">501</a>
|
||
<a href="#502" id="502">502</a>
|
||
<a href="#503" id="503">503</a>
|
||
<a href="#504" id="504">504</a>
|
||
<a href="#505" id="505">505</a>
|
||
<a href="#506" id="506">506</a>
|
||
<a href="#507" id="507">507</a>
|
||
<a href="#508" id="508">508</a>
|
||
<a href="#509" id="509">509</a>
|
||
<a href="#510" id="510">510</a>
|
||
<a href="#511" id="511">511</a>
|
||
<a href="#512" id="512">512</a>
|
||
<a href="#513" id="513">513</a>
|
||
<a href="#514" id="514">514</a>
|
||
<a href="#515" id="515">515</a>
|
||
<a href="#516" id="516">516</a>
|
||
<a href="#517" id="517">517</a>
|
||
<a href="#518" id="518">518</a>
|
||
<a href="#519" id="519">519</a>
|
||
<a href="#520" id="520">520</a>
|
||
<a href="#521" id="521">521</a>
|
||
<a href="#522" id="522">522</a>
|
||
<a href="#523" id="523">523</a>
|
||
<a href="#524" id="524">524</a>
|
||
<a href="#525" id="525">525</a>
|
||
<a href="#526" id="526">526</a>
|
||
<a href="#527" id="527">527</a>
|
||
<a href="#528" id="528">528</a>
|
||
<a href="#529" id="529">529</a>
|
||
<a href="#530" id="530">530</a>
|
||
<a href="#531" id="531">531</a>
|
||
<a href="#532" id="532">532</a>
|
||
<a href="#533" id="533">533</a>
|
||
<a href="#534" id="534">534</a>
|
||
<a href="#535" id="535">535</a>
|
||
<a href="#536" id="536">536</a>
|
||
<a href="#537" id="537">537</a>
|
||
<a href="#538" id="538">538</a>
|
||
<a href="#539" id="539">539</a>
|
||
<a href="#540" id="540">540</a>
|
||
<a href="#541" id="541">541</a>
|
||
<a href="#542" id="542">542</a>
|
||
<a href="#543" id="543">543</a>
|
||
<a href="#544" id="544">544</a>
|
||
</pre></div><pre class="rust"><code><span class="kw">use </span><span class="kw">crate</span>::Vec;
|
||
<span class="kw">use </span>core::{borrow::Borrow, fmt, iter::FromIterator, mem, ops, slice};
|
||
|
||
<span class="doccomment">/// A fixed capacity map / dictionary that performs lookups via linear search
|
||
///
|
||
/// Note that as this map doesn't use hashing so most operations are **O(N)** instead of O(1)
|
||
|
||
</span><span class="kw">pub struct </span>LinearMap<K, V, <span class="kw">const </span>N: usize> {
|
||
<span class="kw">pub</span>(<span class="kw">crate</span>) buffer: Vec<(K, V), N>,
|
||
}
|
||
|
||
<span class="kw">impl</span><K, V, <span class="kw">const </span>N: usize> LinearMap<K, V, N> {
|
||
<span class="doccomment">/// Creates an empty `LinearMap`
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// // allocate the map on the stack
|
||
/// let mut map: LinearMap<&str, isize, 8> = LinearMap::new();
|
||
///
|
||
/// // allocate the map in a static variable
|
||
/// static mut MAP: LinearMap<&str, isize, 8> = LinearMap::new();
|
||
/// ```
|
||
</span><span class="kw">pub const fn </span>new() -> <span class="self">Self </span>{
|
||
<span class="self">Self </span>{ buffer: Vec::new() }
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><K, V, <span class="kw">const </span>N: usize> LinearMap<K, V, N>
|
||
<span class="kw">where
|
||
</span>K: Eq,
|
||
{
|
||
<span class="doccomment">/// Returns the number of elements that the map can hold
|
||
///
|
||
/// Computes in **O(1)** time
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let map: LinearMap<&str, isize, 8> = LinearMap::new();
|
||
/// assert_eq!(map.capacity(), 8);
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>capacity(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
|
||
N
|
||
}
|
||
|
||
<span class="doccomment">/// Clears the map, removing all key-value pairs
|
||
///
|
||
/// Computes in **O(1)** time
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut map: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// map.insert(1, "a").unwrap();
|
||
/// map.clear();
|
||
/// assert!(map.is_empty());
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>clear(<span class="kw-2">&mut </span><span class="self">self</span>) {
|
||
<span class="self">self</span>.buffer.clear()
|
||
}
|
||
|
||
<span class="doccomment">/// Returns true if the map contains a value for the specified key.
|
||
///
|
||
/// Computes in **O(N)** time
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut map: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// map.insert(1, "a").unwrap();
|
||
/// assert_eq!(map.contains_key(&1), true);
|
||
/// assert_eq!(map.contains_key(&2), false);
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>contains_key(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&</span>K) -> bool {
|
||
<span class="self">self</span>.get(key).is_some()
|
||
}
|
||
|
||
<span class="doccomment">/// Returns a reference to the value corresponding to the key
|
||
///
|
||
/// Computes in **O(N)** time
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut map: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// map.insert(1, "a").unwrap();
|
||
/// assert_eq!(map.get(&1), Some(&"a"));
|
||
/// assert_eq!(map.get(&2), None);
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>get<Q>(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&</span>Q) -> <span class="prelude-ty">Option</span><<span class="kw-2">&</span>V>
|
||
<span class="kw">where
|
||
</span>K: Borrow<Q>,
|
||
Q: Eq + <span class="question-mark">?</span>Sized,
|
||
{
|
||
<span class="self">self</span>.iter()
|
||
.find(|<span class="kw-2">&</span>(k, <span class="kw">_</span>)| k.borrow() == key)
|
||
.map(|(<span class="kw">_</span>, v)| v)
|
||
}
|
||
|
||
<span class="doccomment">/// Returns a mutable reference to the value corresponding to the key
|
||
///
|
||
/// Computes in **O(N)** time
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut map: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// map.insert(1, "a").unwrap();
|
||
/// if let Some(x) = map.get_mut(&1) {
|
||
/// *x = "b";
|
||
/// }
|
||
/// assert_eq!(map[&1], "b");
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>get_mut<Q>(<span class="kw-2">&mut </span><span class="self">self</span>, key: <span class="kw-2">&</span>Q) -> <span class="prelude-ty">Option</span><<span class="kw-2">&mut </span>V>
|
||
<span class="kw">where
|
||
</span>K: Borrow<Q>,
|
||
Q: Eq + <span class="question-mark">?</span>Sized,
|
||
{
|
||
<span class="self">self</span>.iter_mut()
|
||
.find(|<span class="kw-2">&</span>(k, <span class="kw">_</span>)| k.borrow() == key)
|
||
.map(|(<span class="kw">_</span>, v)| v)
|
||
}
|
||
|
||
<span class="doccomment">/// Returns the number of elements in this map
|
||
///
|
||
/// Computes in **O(1)** time
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut a: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// assert_eq!(a.len(), 0);
|
||
/// a.insert(1, "a").unwrap();
|
||
/// assert_eq!(a.len(), 1);
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>len(<span class="kw-2">&</span><span class="self">self</span>) -> usize {
|
||
<span class="self">self</span>.buffer.len()
|
||
}
|
||
|
||
<span class="doccomment">/// Inserts a key-value pair into the map.
|
||
///
|
||
/// If the map did not have this key present, `None` is returned.
|
||
///
|
||
/// If the map did have this key present, the value is updated, and the old value is returned.
|
||
///
|
||
/// Computes in **O(N)** time
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut map: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// assert_eq!(map.insert(37, "a").unwrap(), None);
|
||
/// assert_eq!(map.is_empty(), false);
|
||
///
|
||
/// map.insert(37, "b").unwrap();
|
||
/// assert_eq!(map.insert(37, "c").unwrap(), Some("b"));
|
||
/// assert_eq!(map[&37], "c");
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>insert(<span class="kw-2">&mut </span><span class="self">self</span>, key: K, <span class="kw-2">mut </span>value: V) -> <span class="prelude-ty">Result</span><<span class="prelude-ty">Option</span><V>, (K, V)> {
|
||
<span class="kw">if let </span><span class="prelude-val">Some</span>((<span class="kw">_</span>, v)) = <span class="self">self</span>.iter_mut().find(|<span class="kw-2">&</span>(k, <span class="kw">_</span>)| <span class="kw-2">*</span>k == key) {
|
||
mem::swap(v, <span class="kw-2">&mut </span>value);
|
||
<span class="kw">return </span><span class="prelude-val">Ok</span>(<span class="prelude-val">Some</span>(value));
|
||
}
|
||
|
||
<span class="self">self</span>.buffer.push((key, value))<span class="question-mark">?</span>;
|
||
<span class="prelude-val">Ok</span>(<span class="prelude-val">None</span>)
|
||
}
|
||
|
||
<span class="doccomment">/// Returns true if the map contains no elements
|
||
///
|
||
/// Computes in **O(1)** time
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut a: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// assert!(a.is_empty());
|
||
/// a.insert(1, "a").unwrap();
|
||
/// assert!(!a.is_empty());
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>is_empty(<span class="kw-2">&</span><span class="self">self</span>) -> bool {
|
||
<span class="self">self</span>.len() == <span class="number">0
|
||
</span>}
|
||
|
||
<span class="doccomment">/// An iterator visiting all key-value pairs in arbitrary order.
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut map: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// map.insert("a", 1).unwrap();
|
||
/// map.insert("b", 2).unwrap();
|
||
/// map.insert("c", 3).unwrap();
|
||
///
|
||
/// for (key, val) in map.iter() {
|
||
/// println!("key: {} val: {}", key, val);
|
||
/// }
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>iter(<span class="kw-2">&</span><span class="self">self</span>) -> Iter<<span class="lifetime">'_</span>, K, V> {
|
||
Iter {
|
||
iter: <span class="self">self</span>.buffer.as_slice().iter(),
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// An iterator visiting all key-value pairs in arbitrary order, with mutable references to the
|
||
/// values
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut map: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// map.insert("a", 1).unwrap();
|
||
/// map.insert("b", 2).unwrap();
|
||
/// map.insert("c", 3).unwrap();
|
||
///
|
||
/// // Update all values
|
||
/// for (_, val) in map.iter_mut() {
|
||
/// *val = 2;
|
||
/// }
|
||
///
|
||
/// for (key, val) in &map {
|
||
/// println!("key: {} val: {}", key, val);
|
||
/// }
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>iter_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> IterMut<<span class="lifetime">'_</span>, K, V> {
|
||
IterMut {
|
||
iter: <span class="self">self</span>.buffer.as_mut_slice().iter_mut(),
|
||
}
|
||
}
|
||
|
||
<span class="doccomment">/// An iterator visiting all keys in arbitrary order
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut map: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// map.insert("a", 1).unwrap();
|
||
/// map.insert("b", 2).unwrap();
|
||
/// map.insert("c", 3).unwrap();
|
||
///
|
||
/// for key in map.keys() {
|
||
/// println!("{}", key);
|
||
/// }
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>keys(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw">impl </span>Iterator<Item = <span class="kw-2">&</span>K> {
|
||
<span class="self">self</span>.iter().map(|(k, <span class="kw">_</span>)| k)
|
||
}
|
||
|
||
<span class="doccomment">/// Removes a key from the map, returning the value at the key if the key was previously in the
|
||
/// map
|
||
///
|
||
/// Computes in **O(N)** time
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut map: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// map.insert(1, "a").unwrap();
|
||
/// assert_eq!(map.remove(&1), Some("a"));
|
||
/// assert_eq!(map.remove(&1), None);
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>remove<Q>(<span class="kw-2">&mut </span><span class="self">self</span>, key: <span class="kw-2">&</span>Q) -> <span class="prelude-ty">Option</span><V>
|
||
<span class="kw">where
|
||
</span>K: Borrow<Q>,
|
||
Q: Eq + <span class="question-mark">?</span>Sized,
|
||
{
|
||
<span class="kw">let </span>idx = <span class="self">self
|
||
</span>.keys()
|
||
.enumerate()
|
||
.find(|<span class="kw-2">&</span>(<span class="kw">_</span>, k)| k.borrow() == key)
|
||
.map(|(idx, <span class="kw">_</span>)| idx);
|
||
|
||
idx.map(|idx| <span class="self">self</span>.buffer.swap_remove(idx).<span class="number">1</span>)
|
||
}
|
||
|
||
<span class="doccomment">/// An iterator visiting all values in arbitrary order
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut map: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// map.insert("a", 1).unwrap();
|
||
/// map.insert("b", 2).unwrap();
|
||
/// map.insert("c", 3).unwrap();
|
||
///
|
||
/// for val in map.values() {
|
||
/// println!("{}", val);
|
||
/// }
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>values(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw">impl </span>Iterator<Item = <span class="kw-2">&</span>V> {
|
||
<span class="self">self</span>.iter().map(|(<span class="kw">_</span>, v)| v)
|
||
}
|
||
|
||
<span class="doccomment">/// An iterator visiting all values mutably in arbitrary order
|
||
///
|
||
/// # Examples
|
||
///
|
||
/// ```
|
||
/// use heapless::LinearMap;
|
||
///
|
||
/// let mut map: LinearMap<_, _, 8> = LinearMap::new();
|
||
/// map.insert("a", 1).unwrap();
|
||
/// map.insert("b", 2).unwrap();
|
||
/// map.insert("c", 3).unwrap();
|
||
///
|
||
/// for val in map.values_mut() {
|
||
/// *val += 10;
|
||
/// }
|
||
///
|
||
/// for val in map.values() {
|
||
/// println!("{}", val);
|
||
/// }
|
||
/// ```
|
||
</span><span class="kw">pub fn </span>values_mut(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="kw">impl </span>Iterator<Item = <span class="kw-2">&mut </span>V> {
|
||
<span class="self">self</span>.iter_mut().map(|(<span class="kw">_</span>, v)| v)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, K, V, Q, <span class="kw">const </span>N: usize> ops::Index<<span class="kw-2">&</span><span class="lifetime">'a </span>Q> <span class="kw">for </span>LinearMap<K, V, N>
|
||
<span class="kw">where
|
||
</span>K: Borrow<Q> + Eq,
|
||
Q: Eq + <span class="question-mark">?</span>Sized,
|
||
{
|
||
<span class="kw">type </span>Output = V;
|
||
|
||
<span class="kw">fn </span>index(<span class="kw-2">&</span><span class="self">self</span>, key: <span class="kw-2">&</span>Q) -> <span class="kw-2">&</span>V {
|
||
<span class="self">self</span>.get(key).expect(<span class="string">"no entry found for key"</span>)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, K, V, Q, <span class="kw">const </span>N: usize> ops::IndexMut<<span class="kw-2">&</span><span class="lifetime">'a </span>Q> <span class="kw">for </span>LinearMap<K, V, N>
|
||
<span class="kw">where
|
||
</span>K: Borrow<Q> + Eq,
|
||
Q: Eq + <span class="question-mark">?</span>Sized,
|
||
{
|
||
<span class="kw">fn </span>index_mut(<span class="kw-2">&mut </span><span class="self">self</span>, key: <span class="kw-2">&</span>Q) -> <span class="kw-2">&mut </span>V {
|
||
<span class="self">self</span>.get_mut(key).expect(<span class="string">"no entry found for key"</span>)
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><K, V, <span class="kw">const </span>N: usize> Default <span class="kw">for </span>LinearMap<K, V, N>
|
||
<span class="kw">where
|
||
</span>K: Eq,
|
||
{
|
||
<span class="kw">fn </span>default() -> <span class="self">Self </span>{
|
||
<span class="self">Self</span>::new()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><K, V, <span class="kw">const </span>N: usize> Clone <span class="kw">for </span>LinearMap<K, V, N>
|
||
<span class="kw">where
|
||
</span>K: Eq + Clone,
|
||
V: Clone,
|
||
{
|
||
<span class="kw">fn </span>clone(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self </span>{
|
||
<span class="self">Self </span>{
|
||
buffer: <span class="self">self</span>.buffer.clone(),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><K, V, <span class="kw">const </span>N: usize> fmt::Debug <span class="kw">for </span>LinearMap<K, V, N>
|
||
<span class="kw">where
|
||
</span>K: Eq + fmt::Debug,
|
||
V: fmt::Debug,
|
||
{
|
||
<span class="kw">fn </span>fmt(<span class="kw-2">&</span><span class="self">self</span>, f: <span class="kw-2">&mut </span>fmt::Formatter<<span class="lifetime">'_</span>>) -> fmt::Result {
|
||
f.debug_map().entries(<span class="self">self</span>.iter()).finish()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><K, V, <span class="kw">const </span>N: usize> FromIterator<(K, V)> <span class="kw">for </span>LinearMap<K, V, N>
|
||
<span class="kw">where
|
||
</span>K: Eq,
|
||
{
|
||
<span class="kw">fn </span>from_iter<I>(iter: I) -> <span class="self">Self
|
||
</span><span class="kw">where
|
||
</span>I: IntoIterator<Item = (K, V)>,
|
||
{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>out = <span class="self">Self</span>::new();
|
||
out.buffer.extend(iter);
|
||
out
|
||
}
|
||
}
|
||
|
||
<span class="kw">pub struct </span>IntoIter<K, V, <span class="kw">const </span>N: usize>
|
||
<span class="kw">where
|
||
</span>K: Eq,
|
||
{
|
||
inner: <Vec<(K, V), N> <span class="kw">as </span>IntoIterator>::IntoIter,
|
||
}
|
||
|
||
<span class="kw">impl</span><K, V, <span class="kw">const </span>N: usize> Iterator <span class="kw">for </span>IntoIter<K, V, N>
|
||
<span class="kw">where
|
||
</span>K: Eq,
|
||
{
|
||
<span class="kw">type </span>Item = (K, V);
|
||
<span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> {
|
||
<span class="self">self</span>.inner.next()
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, K, V, <span class="kw">const </span>N: usize> IntoIterator <span class="kw">for </span><span class="kw-2">&</span><span class="lifetime">'a </span>LinearMap<K, V, N>
|
||
<span class="kw">where
|
||
</span>K: Eq,
|
||
{
|
||
<span class="kw">type </span>Item = (<span class="kw-2">&</span><span class="lifetime">'a </span>K, <span class="kw-2">&</span><span class="lifetime">'a </span>V);
|
||
<span class="kw">type </span>IntoIter = Iter<<span class="lifetime">'a</span>, K, V>;
|
||
|
||
<span class="kw">fn </span>into_iter(<span class="self">self</span>) -> <span class="self">Self</span>::IntoIter {
|
||
<span class="self">self</span>.iter()
|
||
}
|
||
}
|
||
|
||
<span class="kw">pub struct </span>Iter<<span class="lifetime">'a</span>, K, V> {
|
||
iter: slice::Iter<<span class="lifetime">'a</span>, (K, V)>,
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, K, V> Iterator <span class="kw">for </span>Iter<<span class="lifetime">'a</span>, K, V> {
|
||
<span class="kw">type </span>Item = (<span class="kw-2">&</span><span class="lifetime">'a </span>K, <span class="kw-2">&</span><span class="lifetime">'a </span>V);
|
||
|
||
<span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> {
|
||
<span class="self">self</span>.iter.next().map(|<span class="kw-2">&</span>(<span class="kw-2">ref </span>k, <span class="kw-2">ref </span>v)| (k, v))
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, K, V> Clone <span class="kw">for </span>Iter<<span class="lifetime">'a</span>, K, V> {
|
||
<span class="kw">fn </span>clone(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="self">Self </span>{
|
||
<span class="self">Self </span>{
|
||
iter: <span class="self">self</span>.iter.clone(),
|
||
}
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><K, V, <span class="kw">const </span>N: usize> Drop <span class="kw">for </span>LinearMap<K, V, N> {
|
||
<span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) {
|
||
<span class="comment">// heapless::Vec implements drop right?
|
||
</span>drop(<span class="kw-2">&</span><span class="self">self</span>.buffer);
|
||
<span class="comment">// original code below
|
||
// unsafe { ptr::drop_in_place(self.buffer.as_mut_slice()) }
|
||
</span>}
|
||
}
|
||
|
||
<span class="kw">pub struct </span>IterMut<<span class="lifetime">'a</span>, K, V> {
|
||
iter: slice::IterMut<<span class="lifetime">'a</span>, (K, V)>,
|
||
}
|
||
|
||
<span class="kw">impl</span><<span class="lifetime">'a</span>, K, V> Iterator <span class="kw">for </span>IterMut<<span class="lifetime">'a</span>, K, V> {
|
||
<span class="kw">type </span>Item = (<span class="kw-2">&</span><span class="lifetime">'a </span>K, <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>V);
|
||
|
||
<span class="kw">fn </span>next(<span class="kw-2">&mut </span><span class="self">self</span>) -> <span class="prelude-ty">Option</span><<span class="self">Self</span>::Item> {
|
||
<span class="self">self</span>.iter.next().map(|<span class="kw-2">&mut </span>(<span class="kw-2">ref </span>k, <span class="kw-2">ref mut </span>v)| (k, v))
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><K, V, <span class="kw">const </span>N: usize, <span class="kw">const </span>N2: usize> PartialEq<LinearMap<K, V, N2>> <span class="kw">for </span>LinearMap<K, V, N>
|
||
<span class="kw">where
|
||
</span>K: Eq,
|
||
V: PartialEq,
|
||
{
|
||
<span class="kw">fn </span>eq(<span class="kw-2">&</span><span class="self">self</span>, other: <span class="kw-2">&</span>LinearMap<K, V, N2>) -> bool {
|
||
<span class="self">self</span>.len() == other.len()
|
||
&& <span class="self">self
|
||
</span>.iter()
|
||
.all(|(key, value)| other.get(key).map_or(<span class="bool-val">false</span>, |v| <span class="kw-2">*</span>value == <span class="kw-2">*</span>v))
|
||
}
|
||
}
|
||
|
||
<span class="kw">impl</span><K, V, <span class="kw">const </span>N: usize> Eq <span class="kw">for </span>LinearMap<K, V, N>
|
||
<span class="kw">where
|
||
</span>K: Eq,
|
||
V: PartialEq,
|
||
{
|
||
}
|
||
|
||
<span class="attr">#[cfg(test)]
|
||
</span><span class="kw">mod </span>test {
|
||
<span class="kw">use </span><span class="kw">crate</span>::LinearMap;
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>static_new() {
|
||
<span class="kw">static </span><span class="kw-2">mut </span>_L: LinearMap<i32, i32, <span class="number">8</span>> = LinearMap::new();
|
||
}
|
||
|
||
<span class="attr">#[test]
|
||
</span><span class="kw">fn </span>partial_eq() {
|
||
{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>a = LinearMap::<<span class="kw">_</span>, <span class="kw">_</span>, <span class="number">1</span>>::new();
|
||
a.insert(<span class="string">"k1"</span>, <span class="string">"v1"</span>).unwrap();
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>b = LinearMap::<<span class="kw">_</span>, <span class="kw">_</span>, <span class="number">2</span>>::new();
|
||
b.insert(<span class="string">"k1"</span>, <span class="string">"v1"</span>).unwrap();
|
||
|
||
<span class="macro">assert!</span>(a == b);
|
||
|
||
b.insert(<span class="string">"k2"</span>, <span class="string">"v2"</span>).unwrap();
|
||
|
||
<span class="macro">assert!</span>(a != b);
|
||
}
|
||
|
||
{
|
||
<span class="kw">let </span><span class="kw-2">mut </span>a = LinearMap::<<span class="kw">_</span>, <span class="kw">_</span>, <span class="number">2</span>>::new();
|
||
a.insert(<span class="string">"k1"</span>, <span class="string">"v1"</span>).unwrap();
|
||
a.insert(<span class="string">"k2"</span>, <span class="string">"v2"</span>).unwrap();
|
||
|
||
<span class="kw">let </span><span class="kw-2">mut </span>b = LinearMap::<<span class="kw">_</span>, <span class="kw">_</span>, <span class="number">2</span>>::new();
|
||
b.insert(<span class="string">"k2"</span>, <span class="string">"v2"</span>).unwrap();
|
||
b.insert(<span class="string">"k1"</span>, <span class="string">"v1"</span>).unwrap();
|
||
|
||
<span class="macro">assert!</span>(a == b);
|
||
}
|
||
}
|
||
|
||
<span class="comment">// TODO: drop test
|
||
</span>}
|
||
</code></pre></div></section></main></body></html> |