The "our" case makes sense to me if the for loop is localizing the variable inside the loop. Thus when you call the subs outside the loop $name is undefined until you set it to something different (outside the loop). Here is the output if you comment out the second set of tests:

----- $name is constant inside sub ------
Use of uninitialized value $name in concatenation (.) or string at /tm
+p/test.pl line 17.
red:    <FONT COLOR=''></FONT>
Use of uninitialized value $name in concatenation (.) or string at /tm
+p/test.pl line 17.
violet: <FONT COLOR=''></FONT>
----- sub used inside loop that defined it ------
trying out red: <FONT COLOR='red'></FONT>
trying out blue: <FONT COLOR='blue'></FONT>
trying out green: <FONT COLOR='green'></FONT>
trying out yellow: <FONT COLOR='yellow'></FONT>
trying out orange: <FONT COLOR='orange'></FONT>
trying out purple: <FONT COLOR='purple'></FONT>
trying out violet: <FONT COLOR='violet'></FONT>
----- sub used outside of loop that assigned it ------
Use of uninitialized value $name in concatenation (.) or string at /tm
+p/test.pl line 52.
red:    <FONT COLOR=''></FONT>
green:  <FONT COLOR='something wacky and wonderful'></FONT>
violet: <FONT COLOR='something wacky and wonderful'></FONT>

[download]

I'm not so sure what is happening in the my case.

Good Day,
    Dean

In reply to Re: How do closures and variable scope (my,our,local) interact in perl? by duelafn
in thread How do closures and variable scope (my,our,local) interact in perl? by ELISHEVA

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