I have a subroutine which returns a word based on the results of applying a closure to a test value: 
sub morf {

    my($tester, $testval, $true_word, $false_word)=@_;
    $tester->($testval) ? $true_word : $false_word ;

}

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Now, I want to curry string equal so that my function morf returns 'Male' if the $testval is 'M' and otherwise female: 
sub se {
    my ($val) = @_;

    sub { $_[0] eq $val } ;
}

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morf(se('M'), $driver->{gender}, 'Male', 'Female') ;

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How can this be done?

In reply to currying CORE functions into closures? by metaperl

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