INTERVIEW QUESTIONS PROGRAMMING LANGUAGES PERL DETAILS

Question: what's the purpose of -w.strict,-T?

Answer: w option enables warning.use strict pragma is used then you should declare variables before there use

w option enables warning.use strict pragma is used then you should declare variables before there use Source: CoolInterview.com

-w:Enables warnings.Turning on warnings will make Perl yelp and complain at a huge variety of things that are almost always sources of bugs in your programs.

-t:Perl offers a mechanism called taint that marks any variable that the user can possibly control as being insecure. This includes user input, file input and environment variables.

Strict: It makes you declare all your variables (``strict vars''), and it makes it harder for Perl to mistake your intentions when you are using subs (``strict subs'').
Source: CoolInterview.com

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