Re^6: Short-circuiting a map list. (This works! But ...)

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Re^7: Short-circuiting a map list. (This works! But ...) by BrowserUk (Patriarch) on Oct 09, 2011 at 15:11 UTC
What do you think do returns? I know what the do returns: `print do{ { print 'fred'; map $_,1 .. 10 } };; fred 1 2 3 4 5 6 7 8 9 10` [download] The result of the last statement inside the bare block. Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice.	[reply] [d/l]
Re^8: Short-circuiting a map list. (This works! But ...) by ikegami (Patriarch) on Oct 09, 2011 at 19:18 UTC
No. You've already shown it doesn't do that in practice (in Re^3: Short-circuiting a map list. (This works! But ...)), and it doesn't do that according to the documentation. A BLOCK by itself (labeled or not) is semantically equivalent to a loop that executes once. If the last statement is a loop control structure like a `foreach` or a `while`, the returned value is unspecified. You just got lucky here.	[reply] [d/l] [select]
Re^9: Short-circuiting a map list. (This works! But ...) by BrowserUk (Patriarch) on Oct 09, 2011 at 19:27 UTC
Your conclusion, based on those two quotes, is a non sequitur. "semantically equivalent" is not the same as "is". As already pointed out, the bare block is not "the last statement [in the subroutine]". 2 + 2 != 22. Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice.	[reply]
Re^10: Short-circuiting a map list. (This works! But ...) by ikegami (Patriarch) on Oct 10, 2011 at 01:11 UTC
Re^11: Short-circuiting a map list. (This works! But ...) by BrowserUk (Patriarch) on Oct 10, 2011 at 01:36 UTC
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