The Ds\Vector::map() function is an inbuilt function in PHP which is used to return the result of a callback after applying to each value in the vector.
Ds\Vector public Ds\Vector::map( $callback )
Parameters: This function accepts single parameter $callback which is to be applied to each vector elements.
Return Value: This function returns the vector after applying the callback to each value in the vector.
Below programs illustrate the Ds\Vector::map() function in PHP:
Ds\Vector Object (  => 10  => 20  => 30  => 40  => 50 )
Program 2:This program shows the implementation of map() function which sets 1 in the vector for each element satisfying the condition in callback.
Ds\Vector Object (  => 1  => 1  => 1  =>  => )
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