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notes:perl_cheat_sheet [2026/06/07 11:56]
114.119.158.251 old revision restored (2013/09/22 19:28) 		notes:perl_cheat_sheet [2026/06/07 15:22] (current)
163.7.4.180 old revision restored (2026/05/15 02:45)
Line 73: Line 73:
   * ''%revhash = reverse %hash'' to reverse a hash (for non-unique values, last one wins).   * ''%revhash = reverse %hash'' to reverse a hash (for non-unique values, last one wins).
   * ''keys %hash;'' and ''values %hash;'' return a list of keys or value in same order (or # of keys/values in scalar context).   * ''keys %hash;'' and ''values %hash;'' return a list of keys or value in same order (or # of keys/values in scalar context).
-  *  '' %hash'' is true only if hash has at least one key-value pair.+  *  '' %hash' is true only if hash has at least one key-value pair.
   * To iterate over hash : <code perl>while ( ($key, $value) = each %hash ) {   * To iterate over hash : <code perl>while ( ($key, $value) = each %hash ) {
   print "$key => $value\n"; }</code> or in order of keys <code perl>foreach $key (sort keys %hash) {   print "$key => $value\n"; }</code> or in order of keys <code perl>foreach $key (sort keys %hash) {
notes/perl_cheat_sheet.txt ยท Last modified: 2026/06/07 15:22 by 163.7.4.180

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