Re: [RFC] Immutable variables and objects

Hi! > The with*() methods in PSR-7 are documented to return a new instance, > not modify the existing instance. Yes, there's no way in PHP itself to > force that syntactically, which is why documentation exists. :-) > > Also, in the benchmarks we've run the performance cost of all those new > objects is measured in nanoseconds, ie, small enough that we're not > worried about it. (Hats off to the PHP Internals folks for making that > fast!) It is great that this is fast, but I wonder (maybe off-topic?) why do it? I.e. it is clear that in something like: $a = new Request->withHeaders(...)->withBody(...) ->withEncoding(...)->withETag(...) the intermediate objects are useless and nobody needs 5 new objects when you do it. Am I missing something here? -- Stas Malyshev smalyshev@gmail.com