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<main>
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<h1><a class="header" href="#constructors" id="constructors">Constructors</a></h1>
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<h2><a class="header" href="#description" id="description">Description</a></h2>
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<p>Rust does not have constructors as a language construct. Instead, the convention
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is to use a static <code>new</code> method to create an object.</p>
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<h2><a class="header" href="#example" id="example">Example</a></h2>
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<pre><code class="language-rust ignore">// A Rust vector, see liballoc/vec.rs
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pub struct Vec<T> {
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buf: RawVec<T>,
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len: usize,
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}
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impl<T> Vec<T> {
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// Constructs a new, empty `Vec<T>`.
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// Note this is a static method - no self.
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// This constructor doesn't take any arguments, but some might in order to
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// properly initialise an object
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pub fn new() -> Vec<T> {
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// Create a new Vec with fields properly initialised.
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Vec {
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// Note that here we are calling RawVec's constructor.
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buf: RawVec::new(),
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len: 0,
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}
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}
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}
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</code></pre>
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<h2><a class="header" href="#see-also" id="see-also">See also</a></h2>
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<p>The <a href="../patterns/builder.html">builder pattern</a> for constructing objects where there are multiple
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configurations. </p>
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