Re^5: while following perl hack book


Do you know where your variables are?
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by Util (Priest)

on Feb 05, 2008 at 02:45 UTC ( [id://666180]=note: print w/replies, xml )

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The hack author just omitted the parens. When find is predeclared (or imported in this case), these two lines are identical:
```
find  sub { ... }, $dir_name  ;
find( sub { ... }, $dir_name );
[download]
```
I thought that as well, but when I tried to refactor to the more efficient form (passing all directories at once), I noticed that the code in the &wanted sub needs to know the "root" directory name: $file =~ s{^\Q$incl_dir/\E}{ };. Passing all the dirs at once removes the ability to see $incl_dir.

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Re^6: while following perl hack book by convenientstore (Pilgrim) on Feb 05, 2008 at 04:58 UTC
thank you guys as always These closure, anonymous sub and callback are little bit over my head, so I must do more reading and coding on the subject I will comment more on this as I learn more	[reply]

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