Create an uninitialized array having the same length and data type as a provided array.
var emptyLike = require( '@stdlib/array/empty-like' );Creates an uninitialized array having the same length and data type as a provided array x.
var x = [ 1, 2, 3, 4, 5 ];
var arr = emptyLike( x );
// returns [ 0, 0, 0, 0, 0 ];By default, the output array data type is inferred from the provided array x. To return an array having a different data type, provide a dtype argument.
var x = [ 1, 1 ];
var arr = emptyLike( x, 'int32' );
// returns <Int32Array>- In browser environments, the function always returns zero-filled arrays.
- If
dtypeis'generic', the function always returns a zero-filled array. - In Node.js versions
>=3.0.0, the underlying memory of returned typed arrays is not initialized. Memory contents are unknown and may contain sensitive data.
var dtypes = require( '@stdlib/array/dtypes' );
var zeros = require( '@stdlib/array/zeros' );
var emptyLike = require( '@stdlib/array/empty-like' );
// Create a zero-filled array:
var x = zeros( 4, 'complex128' );
// Get a list of array data types:
var dt = dtypes();
// Generate empty arrays...
var arr;
var i;
for ( i = 0; i < dt.length; i++ ) {
arr = emptyLike( x, dt[ i ] );
console.log( arr );
}@stdlib/array/empty: create an uninitialized array having a specified length.@stdlib/array/full-like: create a filled array having the same length and data type as a provided array.@stdlib/array/ones-like: create an array filled with ones and having the same length and data type as a provided array.@stdlib/array/zeros-like: create a zero-filled array having the same length and data type as a provided array.@stdlib/ndarray/empty-like: create an uninitialized ndarray having the same shape and data type as a provided ndarray.