A variation on this with somewhat different semantics swaps the keywords:
in EXPR for VAR: BLOCK
If you don't need the variable, you can leave the "for VAR" part out:
in EXPR: BLOCK
Too cute? :-)
I don't think it reads well. I would prefer something that would be understandable for a newbie's eyes, even if it fits more with common usage than with the real semantics behind it. For example a Boost-like keyword like:
scoped EXPR as VAR:
BLOCKscoped EXPR:
BLOCKWe may argue that it doesn't mean a lot, but at least if a newbie sees the following code, he would easily guess what it does:
scoped synchronized(mutex):
scoped opening(filename) as file:
...When compared with:
in synchronized(mutex):
in opening(filename) for file:
...As a C++ programmer, I still dream I could also do:
scoped synchronized(mutex) scoped opening(filename) as file ...
which would define a block until the end of the current block...
Regards, Nicolas
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