gnu-social/lib/callable_left_curry.php

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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2008, 2009, StatusNet, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* PHP 5.3 implementation of function currying, using native closures.
* On 5.2 and lower we use the fallback implementation in util.php
*
* @param callback $fn
* @param ... any remaining arguments will be appended to call-time params
* @return callback
*/
function callable_left_curry($fn) {
$extra_args = func_get_args();
array_shift($extra_args);
return function() use ($fn, $extra_args) {
$args = func_get_args();
return call_user_func_array($fn,
array_merge($args, $extra_args));
};
}