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Infix::group Postfix::group Prefix::group

Infix::group Postfix::group Prefix::group

Details

  • This message is generated when the fourth argument in the indicated function is not one of the symbols included in the message.
  • The fourth argument in Infix, Postfix, and Prefix is an associativity specification used for parenthesizing the expression.
  • Off[message] switches off the message; On[message] switches it on. For example: Off[Infix::group].

Examples

Basic Examples  (1)

An error occurs because Automatic is not a valid associativity specification in Infix:

Wolfram Language code: OutputForm[Infix[{17, Infix[{11, 5}, "+|-", 1000, Left]}, "+|-", 1000, Automatic]]

This shows a valid associativity specification in Infix:

Wolfram Language code: OutputForm[Infix[{17, Infix[{11, 5}, "+|-", 1000, Left]}, "+|-", 1000, Left]]