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Function Templates in PERL


Does any body know if PERl supports function templates just as C++ does. I have heard of object-oriented PERL. Hence, wanted to use the feature. Please give the snippet of code also in case u have any.

Sep 15 '06 #1
1 1483

Does any body know if PERl supports function templates just as C++ does. I have heard of object-oriented PERL. Hence, wanted to use the feature. Please give the snippet of code also in case u have any.

in C++ you would have:

Expand|Select|Wrap|Line Numbers
  1. int something( int arg1, int arg2 )
  2. {
  3.   ...processing...
  4. }

in PERL this is done as follows:

Expand|Select|Wrap|Line Numbers
  1. sub something
  2. {
  3.   ...processing...
  4. }
and called by putting an ampersand (&) at the front of the function name:
Expand|Select|Wrap|Line Numbers
  1. &something( val1, val2 );

Input parameters are passed via the @_ array variable.

SO a sample function would be:

Expand|Select|Wrap|Line Numbers
  1. sub ADD
  2. {
  3.   $val1 = $_[0];
  4.   $val2 = $_[1];
  6.   return $val1 + $val2;
  7. }
  10. $answer = &ADD( 2, 3 );
Sep 20 '06 #2

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