yuyat / curry
Function does currying
v0.9.0
2014-10-13 14:29 UTC
Requires
- php: >=5.3
- yuyat/callable_to_reflector: ~0.9.0
Requires (Dev)
- phpunit/phpunit: ~4.2
This package is auto-updated.
Last update: 2024-10-25 21:21:31 UTC
README
Function does currying.
Virtually, it transforms functions takes multiple arguments into nested function each takes one argument like below.
f(x, y, z) => f(x)(y)(z)
And it can be applicated partially. All of below means same.
f(x)(y)(z)
f(x)(y, z)
f(x, y)(z)
f(x, y, z)
Usage
Basic usage
<?php use function yuyat\curry; $sum = curry(function ($x, $y, $z) { reteurn $x + $y + $z; }); echo $sum(1)->apply(2)->apply(3), PHP_EOL; // => 6 echo $sum[1][2][3], PHP_EOL; // Ruby-like short syntax // => 6
Currying functions take variadic parameters
For functions take variadic parameters, you must specify actual parameter length as 2nd argument.
<?php use function yuyat\curry; $sum = curry(function (/* numbers to calculate sum */) { $result = 0; foreach (func_get_args() as $arg) { $result += $arg; } return $result; }, 3); echo $sum(1)->apply(2)->apply(3), PHP_EOL; // => 6
Author
Yuya Takeyama