REBOL 3 Docs Guide Concepts Functions Datatypes Errors
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REBOL 3 Errors: need-value

An attempt was made to define a word to nothing. A set-word was used without an argument.


[:arg1 "needs a value"]


filter-error try [set-to-nothing:]
** Script Error: set-to-nothing needs a value
** Where: set-to-nothing:

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