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String interpretation in Ruby
Ruby's rather clever in terms or how it handles string interpretation. Since variable names only start with special characters sometimes, it can't use Perl's trick of making the $ and @ character special in a string. So instead it uses a #{.....} notation. For example: puts "Tocker is #{tocker}"uses a local variable. puts "Ticker is #{$ticker}"uses a global variable and puts "Sign #{noentrysign.colour} and area #{noentrysign.area}"calls an instance or accessory method on the object. There is a complete example of that code here. (written 2008-03-21, updated 2008-03-22) Associated topics are indexed under R109 - Ruby - Strings and Regular Expressions[3424] Divide 10000 by 17. Do you get 588.235294117647, 588.24 or 588? - Ruby and PHP - (2011-09-08) [2980] Ruby - examples of regular expressions, inheritance and polymorphism - (2010-10-02) [2623] Object Oriented Ruby - new examples - (2010-02-03) [2621] Ruby collections and strings - some new examples - (2010-02-03) [2614] Neatly formatting results into a table - (2010-02-01) [2608] Search and replace in Ruby - Ruby Regular Expressions - (2010-01-31) [2295] The dog is not in trouble - (2009-07-17) [2293] Regular Expressions in Ruby - (2009-07-16) [1891] Ruby to access web services - (2008-11-16) [1887] Ruby Programming Course - Saturday and Sunday - (2008-11-16) [1875] What are exceptions - Python based answer - (2008-11-08) [1305] Regular expressions made easy - building from components - (2007-08-16) [1195] Regular Express Primer - (2007-05-20) [987] Ruby v Perl - interpollating variables - (2006-12-15) [986] puts - opposite of chomp in Ruby - (2006-12-15) [970] String duplication - x in Perl, * in Python and Ruby - (2006-12-07)
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