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README.md

iterNone

Test whether all iterated values are falsy.

Usage

var iterNone = require( '@stdlib/iter/none' );

iterNone( iterator )

Tests whether all iterated values are falsy.

var array2iterator = require( '@stdlib/array/to-iterator' );

var arr = array2iterator( [ 0, 0, 0, 0, 1 ] );

var bool = iterNone( arr );
// returns false

If a provided iterator does not return any iterated values, the function returns true.

var array2iterator = require( '@stdlib/array/to-iterator' );

var bool = iterNone( array2iterator( [] ) );
// returns true

Examples

var randu = require( '@stdlib/random/iter/randu' );
var iterMap = require( '@stdlib/iter/map' );
var iterNone = require( '@stdlib/iter/none' );

function threshold( r ) {
    return ( r > 0.95 );
}

// Create an iterator which generates uniformly distributed pseudorandom numbers:
var opts = {
    'iter': 100
};
var riter = randu( opts );

// Create an iterator which applies a threshold to generated numbers:
var miter = iterMap( riter, threshold );

// Determine if all values are "falsy":
var bool = iterNone( miter );
// returns <boolean>

console.log( bool );

See Also