Data commit

Task/Substring-Top-and-tail/ZX-Spectrum-Basic/substring-top-and-tail.basic

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+10 PRINT FN f$("knight"): REM strip the first letter. You can also write PRINT "knight"(2 TO)
+20 PRINT FN l$("socks"): REM strip the last letter
+30 PRINT FN b$("brooms"): REM strip both the first and last letter
+100 STOP
+
+9000 DEF FN f$(a$)=a$(2 TO LEN(a$))
+9010 DEF FN l$(a$)=a$(1 TO LEN(a$)-(1 AND (LEN(a$)>=1)))
+9020 DEF FN b$(a$)=FN l$(FN f$(a$))