rfc:argument_unpacking
Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
rfc:argument_unpacking [2013/09/30 12:48] – update implementation, mention string keys nikic | rfc:argument_unpacking [2017/09/22 13:28] (current) – external edit 127.0.0.1 | ||
---|---|---|---|
Line 2: | Line 2: | ||
* Date: 2013-08-30 | * Date: 2013-08-30 | ||
* Author: Nikita Popov < | * Author: Nikita Popov < | ||
- | * Status: | + | * Status: |
- | * Proposed for: PHP 5.6 | + | |
* Patch: https:// | * Patch: https:// | ||
* Mailing list discussion: http:// | * Mailing list discussion: http:// | ||
Line 40: | Line 39: | ||
</ | </ | ||
- | It's possible to use '' | + | It's possible to use '' |
<code php> | <code php> | ||
Line 47: | Line 46: | ||
test(...$args1, | test(...$args1, | ||
test(1, 2, 3, ...$args2); | test(1, 2, 3, ...$args2); | ||
- | test(...$args1, | + | </ |
+ | |||
+ | However, it is not possible to use normal arguments after argument unpacking was used. Both of the following are invalid: | ||
+ | |||
+ | <code php> | ||
+ | test(...$args1, | ||
+ | test(...$args1, 4, 5, 6, ...$args2); | ||
</ | </ | ||
Line 75: | Line 80: | ||
<code php> | <code php> | ||
- | var_dump(1, 2, ...null, 3, 4); | + | var_dump(1, 2, ...null, |
// Warning: Only arrays and Traversables can be unpacked | // Warning: Only arrays and Traversables can be unpacked | ||
// int(1) int(2) int(3) int(4) | // int(1) int(2) int(3) int(4) | ||
Line 94: | Line 99: | ||
</ | </ | ||
- | By-reference passing will not work if the unpacked entity is a Traversable. Instead an '' | + | By-reference passing will not work if the unpacked entity is a Traversable. Instead an '' |
<code php> | <code php> | ||
test(...new ArrayIterator([1, | test(...new ArrayIterator([1, | ||
- | // Strict standards: Cannot pass by-reference argument 3 of test() by unpacking a Traversable, | + | // Warning: Cannot pass by-reference argument 3 of test() by unpacking a Traversable, |
</ | </ | ||
Line 108: | Line 113: | ||
==== String keys ==== | ==== String keys ==== | ||
- | In order to ensure forward-compatibility with [[rfc: | + | In order to ensure forward-compatibility with [[rfc: |
===== Backward Compatibility ===== | ===== Backward Compatibility ===== | ||
Line 219: | Line 224: | ||
The patch for this features is available as a PR: https:// | The patch for this features is available as a PR: https:// | ||
+ | |||
+ | ===== Vote ===== | ||
+ | |||
+ | As this is a language change a two third majority is required. | ||
+ | |||
+ | Voting started 2013-12-21 and ended 2014-01-11. | ||
+ | |||
+ | <doodle title=" | ||
+ | * Yes | ||
+ | * No | ||
+ | </ | ||
===== Support in other languages ===== | ===== Support in other languages ===== |
rfc/argument_unpacking.1380545281.txt.gz · Last modified: 2017/09/22 13:28 (external edit)