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filledBy
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Create a filled "generic" array according to a provided callback function.
bash
npm install @stdlib/array-base-filled-by
javascript
var filledBy = require( '@stdlib/array-base-filled-by' );
#### filledBy( len, clbk[, thisArg] )
Returns a filled "generic" array according to a provided callback function.
javascript
function clbk( i ) {
return i;
}
var out = filledBy( 3, clbk );
// returns [ 0, 1, 2 ]
When invoked, a callback function is provided a single argument:
- index: the current array index.
To set the callback execution context, provide a thisArg.
javascript
function clbk( i ) {
this.count += 1;
return i;
}
var ctx = {
'count': 0
};
var out = filledBy( 3, clbk, ctx );
// returns [ 0, 1, 2 ];
var cnt = ctx.count;
// returns 3
javascript
var constantFunction = require( '@stdlib/utils-constant-function' );
var filledBy = require( '@stdlib/array-base-filled-by' );
var out = filledBy( 3, constantFunction( 0.0 ) );
// returns [ 0.0, 0.0, 0.0 ]
out = filledBy( 3, constantFunction( 'beep' ) );
// returns [ 'beep', 'beep', 'beep' ]
out = filledBy( 3, constantFunction( null ) );
// returns [ null, null, null ]
out = filledBy( 3, constantFunction( true ) );
// returns [ true, true, true ]
out = filledBy( 3, constantFunction( void 0 ) );
// returns [ undefined, undefined, undefined ]
