Re^2: Christmas Tree


Your skill will accomplish what the force of many cannot
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by mtve (Deacon)

on Jan 11, 2009 at 11:56 UTC ( [id://735490]=note: print w/replies, xml )

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printf"%22s%s\n",$_%=21,$_=4**$_,y/0/"/cfor 1..22

Happy New Year! :)

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Re^3: Christmas Tree by LanX (Saint) on Jan 11, 2009 at 17:55 UTC
Thanx, and a happy new year for you too! 8 ) I have to admit I was confused by your example, it's important to understand that printf takes his parameters by reference and not by value! So it's possible to still influence $_ in the last parameter with effect for the first! Very insightful, thanx a lot! Cheers Rolf	[reply]
Re^4: Christmas Tree by mtve (Deacon) on Jan 12, 2009 at 07:26 UTC
Well, it's a bit complicated, but yes, all perl functions take parameters by reference.

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