converge

v0.9.6

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PUBLISHED

5 years ago

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3 KB

Accepts a converging function and a list of branching functions and returns a new function.

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converge (

after:Function,

functions:Array

) : Function

Accepts a converging function and a list of branching functions and returns a new function. The arity of the new function is the same as the arity of the longest branching function. When invoked, this new function is applied to some arguments, and each branching function is applied to those same arguments. The results of each branching function are passed as arguments to the converging function to produce the return value.

Example

const average = R.converge(R.divide, [R.sum, R.length])
     average([1, 2, 3, 4, 5, 6, 7]) //=> 4

     const strangeConcat = R.converge(R.concat, [R.toUpper, R.toLower])
     strangeConcat("Yodel") //=> "YODELyodel"

Arguments

after: Function

A function. after will be invoked with the return values of fn1 and fn2 as its arguments.

functions: Array

A list of functions.

Returns

Function

A new function.