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Ingy döt Net 2013-04-11 01:07:29 -07:00
parent b83f433714
commit 68f8f3e56b
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Task/Substring-Top-and-tail/REXX/substring-top-and-tail.rexx Normal file
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/*REXX program to show removal of 1st/last/1st&last chars from a string.*/
z = 'abcdefghijk'
say ' the original string =' z
say 'string first character removed =' substr(z,2)
say 'string last character removed =' left(z,length(z)-1)
say 'string first & last character removed =' substr(z,2,length(z)-2)
exit
/* ┌───────────────────────────────────────────────┐
│ however, the original string may be null, │
│ or of insufficient length which may cause the │
│ BIFs to fail (because of negative length). │
└───────────────────────────────────────────────┘ */
say ' the original string =' z
say 'string first character removed =' substr(z,2)
say 'string last character removed =' left(z,max(0,length(z)-1))
say 'string first & last character removed =' substr(z,2,max(0,length(z)-2))
/*stick a fork in it,we're done.*/