Regarding PHP6, string/array APIs

Stas made a good point about need to start with new API, which then can be followed by syntactic sugar. So, we need some ideas to start with: 1. A lot of people told, that it would be a good idea to come with a written standard regarding arguments order. I don't care what it will be, as long as it will be documented. 2. It would be really useful to have 2 versions of each function: one which mutates the variable and one which returns the new variable. Example: <?php $src = 'SoUrCe'; $result = lowered($src); // $result == 'source', $src == 'SoUrCe' $result = lower($srd); // $result == true, $src = 'source' ?> 3. Speaking of implementation… Functions, which return slice of string/array could be made to reference the same memory-areas as the source strings/arrays. That is until the first modification, of course. Kinda advanced copy-on-write semantics. I know something like that is implemented in D http://dlang.org/d-array-article.html and Go 4. casting between strings and arrays of characters would be a great thing to have too. this way, useful array-oriented functions could be applied to strings

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