CamelCase in Perl

Example for versions rakudo-2010.08

The first line reads the string to process, the second one — declares the variable which will store the result.

The most interesting things happen in the third line. The regular expression <[a..zA..Z]>+ finds all words in the string, and for each found word the built-in code { $cc ~= $0.capitalize; } is executed. It translates the word to the required case and appends it to the result. 

my $A = $*IN.get;
my $cc = "";
$A ~~ s:g /(<[a..zA..Z]>+) { $cc ~= $0.capitalize; } //;
print $cc;