Using the Default Variable $_ : Special Variables « Language Basics « Perl

1. Perl
2. Language Basics
3. Special Variables

Using the Default Variable $_

   

#When you use the construct <STDIN> without assigning, Perl assigns that return value to a variable named $_. 
#Many Perl functions use this special variable, called the default variable.
#You can use the print function without specifying a variable at all to print the contents of $_. 


while($_ = <STDIN>) {
   print $_;
}
          

   
    
    
  

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