Test whether all elements in a collection are falsy.
npm install @stdlib/utils-noneAlternatively,
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var none = require( '@stdlib/utils-none' );Tests whether all elements in a collection are falsy.
var arr = [ 0, 0, 0, 0, 0 ];
var bool = none( arr );
// returns trueIf provided an empty collection, the function returns true.
var bool = none( [] );
// returns true- A
collectionmay be either anArray,Typed Array, or an array-likeObject(excludingstringsandfunctions). - The function does not skip
undefinedelements and is thus not optimized for sparse collections.
var randu = require( '@stdlib/random-base-randu' );
var none = require( '@stdlib/utils-none' );
var bool;
var arr;
var i;
arr = new Array( 100 );
for ( i = 0; i < arr.length; i++ ) {
arr[ i ] = ( randu() > 0.95 );
}
bool = none( arr );
// returns <boolean>@stdlib/utils/any: test whether at least one element in a collection is truthy.@stdlib/utils/every: test whether all elements in a collection are truthy.@stdlib/utils/for-each: invoke a function for each element in a collection.@stdlib/utils/none-by: test whether all elements in a collection fail a test implemented by a predicate function.@stdlib/utils/some: test whether a collection contains at leastnelements which are truthy.
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See LICENSE.
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