/
Any-list.pm
66 lines (55 loc) · 1.6 KB
/
Any-list.pm
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class Any is also {
our List multi method grep($values: Code $test) {
gather {
take $_ if $test($_) for $values.list;
}
}
our List of Capture multi method map(List @values: Code *&expr) {
gather {
my $i = 0;
while ($i <= @values.end) {
my @args;
@args.push(($i <= @values.end) ?? @values[$i++] !! undef)
for (1..&expr.arity || 1);
take &expr(|@args);
}
}
}
our List of Capture multi method map($value: Code *&expr) {
($value,).map: &expr
}
# RT #63700 - parse failed on &infix:<cmp>
our Array multi method min( $values: Code $by = sub { $^a cmp $^b } ) {
my @list = $values.list;
return +Inf unless @list.elems;
my $res = @list.shift;
for @list -> $x {
if (&$by($res, $x) > 0) {
$res = $x;
}
}
$res;
};
our List multi method pairs(@values: *@indices) {
gather {
for (@values.keys Z @values) -> $key, $val is rw {
take ($key => $val)
unless (@indices && ($key !~~ any(@indices)));
}
}
}
}
our List multi grep(Code $test, *@values) {
@values.grep($test)
}
our List of Capture multi map(Code $expr, *@values) {
@values.map($expr)
}
our List multi pairs(@values, *@indices) {
@values.pairs(@indices)
}
our List multi min(*@values) {
my $by = @values[0] ~~ Code ?? shift @values !! sub { $^a cmp $^b };
@values.min($by);
}
# vim: ft=perl6