angular-cn/public/docs/js/latest/api/di/Key-class.jade

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exported from <a href='../di'>angular2/di</a>
defined in <a href="https://github.com/angular/angular/tree/2.0.0-alpha.32/modules/angular2/src/di/key.ts#L6-L39">angular2/src/di/key.ts (line 6)</a>
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A unique object used for retrieving items from the <a href='Injector-class.html'><code>Injector</code></a>.
Keys have:
- a system-wide unique `id`.
- a `token`, usually the `Type` of the instance.
Keys are used internally by the <a href='Injector-class.html'><code>Injector</code></a> because their system-wide unique `id`s allow the
injector to index in arrays rather than looking up items in maps.
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h2 Members
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h3 constructor
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code.
constructor(token: Object, id: number)
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h3 token
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h3 id
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h3 displayName
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