19 lines
436 B
Perl
19 lines
436 B
Perl
sub fs(&) {
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my $func = shift;
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sub { map $func->($_), @_ }
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}
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sub double($) { shift() * 2 }
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sub square($) { shift() ** 2 }
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my $fs_double = fs(\&double);
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my $fs_square = fs(\&square);
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my @s = 0 .. 3;
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print "fs_double(@s): @{[ $fs_double->(@s) ]}\n";
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print "fs_square(@s): @{[ $fs_square->(@s) ]}\n";
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@s = (2, 4, 6, 8);
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print "fs_double(@s): @{[ $fs_double->(@s) ]}\n";
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print "fs_square(@s): @{[ $fs_square->(@s) ]}\n";
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