Description
The DEL statement is used to remove a specified element of a dynamic array.
DEL variable<expression1{, expression2{, expression3}}>Where
- variable can be any previously assigned variable or matrix element. The expressions must evaluate to a numeric value or a runtime error will occur.
- expression1 specifies the field in the array to operate upon and must be present.
- expression2 specifies the multivalue within the field to operate upon and is an optional parameter.
- expression3 is optionally present when expression2 has been included. It specifies which subvalue to delete within the specified multivalue.
Note:
- Truncates non-integer values for any of the expressions to integers.
- Ignores invalid numeric values for the expressions without warning The command operates within the scope specified, i.e. if specifying only a field then it deletes the entire field (including its multivalues and subvalues). If specifying a subvalue, then it deletes only the subvalue leaving its parent multivalue and field intact.
An example of use is as follows:
0001 Numbers="" 0002 FOR I = 1 TO 20 0003 Numbers<I> = I ;*generate numbers 0004 NEXT I 0005 0006 FOR I = 19 TO 1 STEP 2 0007 DEL Numbers<I> ;*remove odd numbers 0008 NEXT I
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