2016-08-08 15:48:45 -07:00
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extends ../../../ts/_cache/guide/pipes.jade
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2016-01-21 09:49:13 -08:00
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2016-05-13 13:44:14 -07:00
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block includes
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include ../_util-fns
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2016-01-21 09:49:13 -08:00
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2016-05-13 13:44:14 -07:00
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block pure-change
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:marked
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Angular executes a *pure pipe* only when it detects a *pure change* to the input value.
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In Angular Dart, a *pure change* results only from a change in object reference
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(given that [everything is an object in Dart](https://www.dartlang.org/docs/dart-up-and-running/ch02.html#important-concepts)).
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2016-01-21 09:49:13 -08:00
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