An Intro to Perl, Pt. 2Hashes (Associative Arrays)Example HashesHash ControlForeach Control StatementThe Split FunctionAn Intro to Perl, Pt. 2Hashes, Foreach Control, and the Split FunctionHashes (Associative Arrays)•Arrays with string indices•Each index is called a key•Different braces than arrays ({} not [])•Use the % sigil to symbolize a hashExample Hashes•$numbers{“one”}=”1”; Assigns 1 to key “one”•$numbers{“two”}=”2”; (accessed as a scalar)•$numbers{“three”}=”3”;•%numbers=(“one”,”1”,”two”,”2”,”three”,”3”);Creates hash with indices one, two, three and values of 1, 2, and 3Hash Control•while(($key, $value) = each %numbers){print "$key $value\n”;}Prints out individual Key-value pairs for the hashForeach Control Statement•For loop designed for processing arrays, hashes, and lists.•@word=(“This”, “is”, “an”, “array”);•foreach $word (@words){print "$word\n";}@myNames = ('Larry', 'Curly', 'Moe');foreach (@myNames) {print $_ . “\n”;}The Split Function•Splits a string using a specific delimiter•@fields=split " ", $string;If $string = “The quick brown fox”@fields= (“The”, “quick”, “brown”, “fox”)•Default delimiter is a space “ “•$info = "Caine:Michael:Actor:14, Leafy Drive"; @personal = split(/:/,
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