Re: How can we interpolate an expression??

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Re^2: How can we interpolate an expression?? by Anonymous Monk on Sep 20, 2012 at 18:06 UTC
http://perldoc.perl.org/perlintro.html#Scalars `print "The square of $answer is ", $answer * $answer, "\n";` [download] print takes a list :) this list can be of a single item. join takes a list and makes it a single string `print join '', "The square of $answer is ", $answer * $answer, "\n";` [download] you can also use the join operator (concatenation) `print "The square of $answer is ". $answer * $answer. "\n";` [download] If you insist on interpolation, see http://perldoc.perl.org/perltrap.html#Interpolation-Traps @ always interpolates an array in double-quotish strings Arbitrary expressions are evaluated inside braces within double quotes	[reply] [d/l] [select]
Re^2: How can we interpolate an expression?? by Rohit Jain (Sexton) on Sep 20, 2012 at 18:06 UTC
Yes.. I can use single quotes and '.' to concatenate the results just as we do in Java.. `say 'Result is :' . $num * $multipler;` [download]	[reply] [d/l]
Re^3: How can we interpolate an expression?? by Anonymous Monk on Sep 20, 2012 at 18:10 UTC
`my $arrayref = [ 4200 / 100 ]; print "The answer is $arrayref \n";` [download] The answer is ARRAY(0x3f8a94) `my $arrayref = [ 4200 / 100 ]; print "The answer is @$arrayref \n";` [download] The answer is 42 `my $arrayref = ; print "The answer is @[ 4200 / 100 ] \n";` [download] `syntax error at - line 1, near "= ;" Execution of - aborted due to compilation errors.` [download] `print "The answer is @{[ 4200 / 100 ]}\n";` [download] The answer is 42	[reply] [d/l] [select]