Re^3: Issue destroying image using perl/TK

This did the trick. Thanks

@_ is the list of incoming parameters to a subroutine. What is the significants of () around the scaler pv?

Comment on Re^3: Issue destroying image using perl/TK

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Re^4: Issue destroying image using perl/TK by lamprecht (Friar) on Mar 23, 2011 at 19:11 UTC
`()` make the left hand side a list. Arrays return their elements when evaluated in list context. See also perldata : `Assignment is a little bit special in that it uses its left argument t +o determine the context for the right argument. Assignment to a scala +r evaluates the right-hand side in scalar context, while assignment t +o an array or hash evaluates the righthand side in list context. Assi +gnment to a list (or slice, which is just a list anyway) also evaluat +es the righthand side in list context.` [download] Cheers, Christoph	[reply] [d/l] [select]

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Re^4: Issue destroying image using perl/TK
by lamprecht (Friar) on Mar 23, 2011 at 19:11 UTC

() make the left hand side a list. Arrays return their elements when evaluated in list context.

perldata

Assignment is a little bit special in that it uses its left argument t
+o determine the context for the right argument. Assignment to a scala
+r evaluates the right-hand side in scalar context, while assignment t
+o an array or hash evaluates the righthand side in list context. Assi
+gnment to a list (or slice, which is just a list anyway) also evaluat
+es the righthand side in list context.
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