summaryrefslogtreecommitdiff
path: root/lib/curry.php
diff options
context:
space:
mode:
authorBrion Vibber <brion@pobox.com>2009-12-15 13:53:19 -0800
committerBrion Vibber <brion@pobox.com>2009-12-16 09:27:48 -0500
commit0158f4f73db1c6090c09da8cc3cdcfb97af3883b (patch)
treed9595dd5285fe0341c93338721cb5216579a86f9 /lib/curry.php
parent00fb5feff8f2552f63f1ddc7b1bef25ebd408507 (diff)
PHP 5.3 closure-based implementation of curry(); old implementation used as fallback for older PHP versions. Added unit tests to confirm they both work!
Diffstat (limited to 'lib/curry.php')
-rw-r--r--lib/curry.php36
1 files changed, 36 insertions, 0 deletions
diff --git a/lib/curry.php b/lib/curry.php
new file mode 100644
index 000000000..6136dcdc3
--- /dev/null
+++ b/lib/curry.php
@@ -0,0 +1,36 @@
+<?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 $fn
+ * @param ... any remaining arguments will be appended to call-time params
+ * @return callback
+ */
+function curry($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));
+ };
+}