Been a while. Have a simple one – what does this print?
$arr[null] = "Null string"; $arr[false] = "False string"; $arr[0] = "Zero string"; print_r($arr);
Archive for the ‘Language Design’ Category
You make this all go away
Friday, December 17th, 2010Carry out my sentence
Wednesday, January 13th, 2010Early on in PHP’s life, its type system contained only strings, ints, reals, arrays, “resources,” and null. A number of features have been bodged in on top of this minimal system without really extending it. “Function pointer” functionality was one of the first.
I really don’t know what you mean
Monday, January 11th, 2010It’s Monday, and I’m sick, so you get some low-hanging fruit today. The following snippet produces a syntax error in PHP:
1 2 3 4 5 6 7 | < ?php function monolithic_dimensions() { return array(1, 4, 9); } print monolithic_dimensions()[0]; // syntax error, unexpected '[' ?> |
I’d rather die than give you control
Saturday, January 9th, 2010Most modern languages have a construct that allows code to run at the end of a block regardless of how flow leaves a block. This allows code to reliably close resources, perform rollbacks, and otherwise maintain invariants relatively easily, even in the presence of exceptions.