Substring/Top and tail: Difference between revisions
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({{header|ZX Spectrum Basic}}) |
({{header|Perl}}) |
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=={{header|ZX Spectrum Basic}}== |
=={{header|ZX Spectrum Basic}}== |
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<lang zxbasic> |
<lang zxbasic>10 PRINT FN f$("knight"): REM strip the first letter |
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10 PRINT FN f$("knight"): REM strip the first letter |
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20 PRINT FN l$("socks"): REM strip the last letter |
20 PRINT FN l$("socks"): REM strip the last letter |
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30 PRINT FN b$("brooms"): REM strip both the first and last letter |
30 PRINT FN b$("brooms"): REM strip both the first and last letter |
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9000 DEF FN f$(a$)=a$(2 TO LEN(a$)) |
9000 DEF FN f$(a$)=a$(2 TO LEN(a$)) |
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9010 DEF FN l$(a$)=a$(1 TO LEN(a$)-(1 AND (LEN(a$)>=1))) |
9010 DEF FN l$(a$)=a$(1 TO LEN(a$)-(1 AND (LEN(a$)>=1))) |
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9020 DEF FN b$(a$)=FN l$(FN f$(a$)) |
9020 DEF FN b$(a$)=FN l$(FN f$(a$)) </lang> |
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</lang> |
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=={{header|Perl}}== |
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<lang perl>print substr("knight",1), "\n"; # strip first character |
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print substr("socks", 0, -1), "\n"; # strip last character |
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print substr("brooms", 1, -1), "\n"; # strip both first and last characters</lang> |
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In perl, we can also remove the last character from a string variable with the chop function: |
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<lang perl>$string = 'ouch'; |
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$bits = chop($string); # The last letter is returned by the chop function |
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print $bits; # h |
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print $string; # ouc # See we really did chop the last letter off</lang> |
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[[Category:String manipulation]] |
[[Category:String manipulation]] |
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