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			12 lines
		
	
	
		
			422 B
		
	
	
	
		
			Plaintext
		
	
	
	
	
	
extends ../../../ts/_cache/guide/pipes.jade
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block includes
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  include ../_util-fns
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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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