array coalesce operator concept

> "David Rodrigues" wrote in message news:CAEsg9X2ECG62i7Z_Nu11kqr7 > yVBkmUcd3MxGt78ULAmpFx--_w@mail.gmail.com... > >> >> The idea is good, but I don't know if it is more clear than an 'if()' >> > > I think that this proposal is totally ridiculous and should be shot down > in flames. My reasoning is as follows: > > 1) There should be a rule that anything which can be achieved with 5 lines > or less in userland code should be automatically excluded from becoming a > change to the language. The cost of changing the language in order to get > around the laziness of a small number of users versus the "benefit" of > making the language more complicated for the rest of us, as well as adding > to the maintenance burden is simply not worth it. > > 2) Proposals such as this violate the first rule of good programming which > is to provide code which is readable and therefore understandable by > others, and therefore maintainable. I don't know about you, but I find it > much easier to read words than symbols. The idea that the code "if > (is_array($foo))" is too verbose and should be replaced with a shorthand > symbol is just too ridiculous for word. If any more of these shortcuts is > implemented then I'm afraid that code will look too much like a bunch of > hieroglyphics and become far less readable. > > Just my 2 cents worth. > > -- > Tony Marston > > > Em 11 de jul de 2017 12:15 PM, "Mark Shust" <mark@shust.com> escreveu: >> >> Hello, >>> >>> I wanted to garnish feedback on a RFC proposal. This is just a concept at >>> this point, and is inspired by the null coalesce operator. >>> >>> Code will error if a non-array value is passed through a looping feature. >>> For example, this code: >>> >>> <?php >>> >>> $foo = "abc"; >>> >>> foreach ($foo as $bar) { >>> >>> echo $bar; >>> >>> } >>> >>> >>> will result in the error: >>> >>> PHP Warning: Invalid argument supplied for foreach() in test.php on >>> line 3 >>> >>> >>> To prevent this, the logical solution is to wrap this in an is_array >>> check: >>> >>> <?php >>> >>> $foo = "abc"; >>> >>> if (is_array($foo)) { >>> >>> foreach ($foo as $bar) { >>> >>> echo $bar; >>> >>> } >>> >>> } >>> >>> >>> This code runs successfully and does not error out. For a syntactic >>> sugar/improvement, this can be shorthand for executing the loop instead >>> of >>> wrapping the block within an is_array check: >>> >>> >>> <?php >>> >>> $foo = "abc"; >>> >>> foreach (??$foo as $bar) { >>> >>> echo $bar; >>> >>> } >>> >>> >>> Let me know your thoughts. >>> >>> >>> Cheers, >>> Mark >>> >>> > > -- > PHP Internals - PHP Runtime Development Mailing List > To unsubscribe, visit: http://www.php.net/unsub.php > >