| 1 |
tr/ab/XY/ translates a to X and b to Y in string $_
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| 2 |
As for m and s, one can apply tr to a general string with =~
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| 3 |
$string =~ tr/a-z/A-Z/; # translates letters from lower to upper case in $string
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| 4 |
Note use of - to specify range as in regular expressions, although tr does NOT use regular expressions
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| 5 |
tr can count and return number of characters matched
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| 6 |
$numatoz = tr/a-z//; # $numatoz holds number of lower case letters in $_
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| 7 |
if final string empty no substitutions are made
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| 8 |
if second string shorter than first, the last character in second string is repeated
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| 9 |
tr/a-z/A?/; # replaces a by A and all other lower case letters by ?
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| 10 |
if the /d option used, unspecified translated characters are deleted
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| 11 |
tr/a-z//d; # deletes all lower case letters
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| 12 |
the /c option complements characters in initial string
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| 13 |
tr/a-zA-Z/_/c; # translates ALL nonletters into _
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| 14 |
the /s option captures multiple consecutive copies of any letter in final string and replaces them by a single copy
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