15 lines
495 B
Markdown
15 lines
495 B
Markdown
### call
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Given a key and a set of arguments, call them when given a context. Primarily useful in composition.
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Use a closure to call a stored key with stored arguments.
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```js
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const call = ( key, ...args ) => context => context[ key ]( ...args );
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/*
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Promise.resolve( [ 1, 2, 3 ] ).then( call('map', x => 2 * x ) ).then( console.log ) //[ 2, 4, 6 ]
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const map = call.bind(null, 'map')
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Promise.resolve( [ 1, 2, 3 ] ).then( map( x => 2 * x ) ).then( console.log ) //[ 2, 4, 6 ]
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*/
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```
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