I am trying to use ‘in’ clause in a mapper snap. But it does not evaluate correctly. 30 in [30,40,50] ----> false 30 in [‘30’,‘4’,‘50’] ----> false (x => x in [‘4’,‘5’,‘6’])(4) ----> false Has anyone tried it already? Am I missing anything?

Syntax for checking if a value is in an array is the same as in javascript. Try: [30,40,50].indexOf(30) != -1 —> true [30,40,50].indexOf(90) != -1 —> false The reason for the “!= -1” is that indexOf returns -1 if the element is not found in an array. Otherwise it returns the index. Same method works for strings.

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krupalibshah

Contributor

8 years ago

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Using 'in' clause in a mapper

I am trying to use ‘in’ clause in a mapper snap. But it does not evaluate correctly.

30 in [30,40,50] ----> false

30 in [‘30’,‘4’,‘50’] ----> false

(x => x in [‘4’,‘5’,‘6’])(4) ----> false

Has anyone tried it already? Am I missing anything?

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Forum Discussion

Using 'in' clause in a mapper

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