angular-cn/public/docs/js/latest/api/change_detection/Pipe-interface.jade

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p.location-badge.
exported from <a href='../change_detection'>angular2/change_detection</a>
defined in <a href="https://github.com/angular/angular/tree/2.0.0-alpha.32/modules/angular2/src/change_detection/pipes/pipe.ts#L28-L55">angular2/src/change_detection/pipes/pipe.ts (line 28)</a>
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An interface for extending the list of pipes known to Angular.
If you are writing a custom <a href='Pipe-interface.html'><code>Pipe</code></a>, you must extend this interface.
#Example
```
class DoublePipe implements Pipe {
supports(obj) {
return true;
}
onDestroy() {}
transform(value, args = []) {
return `${value}${value}`;
}
}
```
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h2 Members
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h3 supports
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supports(obj: any)
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h3 onDestroy
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onDestroy()
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h3 transform
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transform(value: any, args: List&lt;any&gt;)
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