here is code: 

perl -e "$a = qq(ab); $a + 3; print $a;"  # ab

perl -e "$a = qq(ab1); $a ++; print $a;"   # ab2

perl -e "$a = qq(ab1); for(1..10) {$a ++;} print $a;" #ac1

[download]
looks like perl5 string doesn't support operations of arithmetic but self-increment/decrement. My question is how override operator so as to fit on string? and take a look third statement, IMHO, ab11 is more reasonable. Any help?


I am trying to improve my English skills, if you see a mistake please feel free to reply or /msg me a correction

In reply to string operations of arithmetic by xiaoyafeng

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