on

Summary

Apply f to the result of g(a) and g(b).

Tip

This function is curried.

Examples

Building a case-insensitive string comparison function.

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const streqi = on(eq, lower); // i.e. (a, b) => eq(lower(a), lower(b))
streqi('FOObar', 'fooBAR');
//=> true

Parameters

Name	Type	Description
f	function	Binary function.
g	function	Unary function.
a	?	Any value.
b	?	Any value.

Return

?