Re^3: Chomp, Concatenation and paths

The anonymous frère likely meant to tell you that the environment is mapped bidirectionally into Perl as the %ENV hash. See perlvar about all special Perl variables.

Comment on Re^3: Chomp, Concatenation and paths Download Code

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Re^4: Chomp, Concatenation and paths by Mad_Mac (Beadle) on Jun 25, 2010 at 19:58 UTC
OK, I get it. I could use that instead of a system call. I don't see how that saves me a step, other than maybe I don't need to `chomp`?	[reply] [d/l]
Re^5: Chomp, Concatenation and paths by ikegami (Patriarch) on Jun 25, 2010 at 20:11 UTC
"One step" is quite an understatement. You're spawning a new process (which involves fetching `%ENV`), executing a shell, executing a shell command, checking for errors (or not) and parsing the response in order to get a value Perl already had to begin with. Using `$ENV{localappdata}` saves an incredible number of steps. Also, it doesn't return "Echo is on" if the variable isn't set, and it's portable. Update: Added last paragraph.	[reply] [d/l] [select]
Re^5: Chomp, Concatenation and paths by Corion (Patriarch) on Jun 25, 2010 at 19:59 UTC
`print "$ENV{localappdata}\\someApplication\\";` [download]	[reply] [d/l]