a) Perl Idioms Explained - @ary = $str =~ m/(stuff)/g covers this but in essence you are assigning the return value of m// (yes /.../ == m/.../ ) to a scalar. What is the return value? See perlre but it is 1 (true) if there is a match and false (null string) if there is no match. $data *is not altered* - it was never set to 'Hello World' due to precedence ie the expression parses as $data = ( 'string' =~ m/stuff/ );
b) BEGIN executes at the begining ie compile time before CHECK, INIT and of course END. These four block types run in this order:
- BEGIN - Runs ASAP (as soon as parsed) whenever encountered during compilation,
before compiling the rest of the file.
- CHECK - Runs when compilation is complete, but before the program starts.
- INIT - Runs at the beginning of execution right before the main flow of your program starts.
- END - Runs at the end of execution right after the program finishes.
Congrats on the payrise. Who says these sorts of tests are pointless!
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