Texas Instruments TI89 Developer Guide - Page 1175
ER_ARG_CANNOT_BE_FOLDER, BASIC command DelVar.
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Appendix A: System Routines - Variables 1133 cmd_delvar Declaration: void cmd_delvar (EStackIndex sym) Category(ies): Variables Description: Delete one or more variables. This is the TI-BASIC command DelVar. As specified in the Managing Variables section of the Memory Management chapter, these routines should be used instead of the low-level symbol table routines. Inputs: sym - EStackIndex of variable name(s) to delete (terminated by an END_TAG). Outputs: May throw these errors: ER_LOCKED - Variable is locked or in-use. ER_ARG_CANNOT_BE_FOLDER - Use cmd_delfold to delete folders. ER_RESERVED - Reserved names cannot be deleted. Assumptions: None Side Effects: None Availability: On AMS 1.05 and higher. TI-89 / TI-92 Plus Differences: None See Also: TokenizeSymName Example: This example deletes the variable name in varName. void DelVar( BYTE *varName ) { EStackIndex oldTop = top_estack; /* save top of ESTACK */ TRY push_quantum (END_TAG); /* mark end of parameter list */ if (TokenizeSymName( varName, 0 ) == NULL) /* push tokenized name on ESTACK */ ER_THROW( INVALID_PATHNAME_ERROR ); cmd_delvar(top_estack); top_estack = oldTop; /* restore top of ESTACK */ ONERR top_estack = oldTop; /* restore top of ESTACK */ PASS; /* pass error on up to caller */ ENDTRY } TI-89 / TI-92 Plus Developer Guide Not for Distribution Beta Version January 26, 2001
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