Data::Util::Curry(3) Curries functions and methods

## SYNOPSIS

use feature 'say';
use Data::Util qw(curry);
sub sum{
my \$total = 0;
for my \$x(@_){
\$total += \$x;
}
return \$total;
}
# placeholder "\0" indicates a subscript of the arguments
say curry(\&add, \0, 42)->(10); # 52
# placeholder "*_" indicates all the arguments
say curry(\&add, *_)->(1 .. 10); # 55
# two subscripts and the rest of the arguments
say curry(\&add, *_, \1, \0)->(1 .. 5); # 3 + 4 + 5 + 1 + 2

(todo)

## Currying Functions

```        curry(\&f, \0, 2)->(1); # f(1, 2)
curry(\&f, 3, \0)->(4); # f(3, 4)
curry(\&f, *_)->(5, 6); # f(5, 6)
curry(\&f, \0, \1, *_)->(1, 2, 3, 4); # f(1, 2, 3, 4)
curry(\&f, *_, \0, \1)->(1, 2, 3, 4); # f(3, 4, 1, 2)
```

## Currying Methods

```        curry(\$obj, 'something', *_)->(1, 2);  # \$obj->something(1, 2)
curry(\$obj, 'something',
foo => \0,
bar => \1)->(1, 2); # \$obj->something(foo => 1, bar => 2)
curry(\0, 'something', \1)->(\$obj, 42);   # \$obj->something(42)
curry(\$obj, \0, *_)->('something', 1, 2); # \$obj->something(1, 2)
```

## Argument Semantics

```        sub incr{ \$_[0]++ }
my \$i = 0;
curry(\&incr, \0)->(\$i); # \$i++
curry(\&incr, *_)->(\$i); # \$i++
curry(\&incr, \$i)->();   # \$i++
```