On 24/05/2017 23:59, Gregory Ewing wrote:
bartc wrote:
Yet the language will stop you assigning to 672, or "abc".
Maybe the language could have been made even smaller if that was not
checked; after all the developer ought to be trusted not to assign to
them!
I'm told that some Fortran implementations experimented with
something akin to that, with "interesting" results.
That was quite likely with older Fortrans, where subroutines only used
pass-by-reference, but which didn't stop you passing references to
constants that the subroutine could then modify.
I doubt that's still the case. With C, however, I tried this today:
"abcdef"[3] = 'z';
puts("abcdef");
Some versions crashed; some printed 'abczef', and some 'abcdef'. (The
language says this is undefined, but it doesn't try too hard to stop you
doing it.)
--
bartc
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