Condition::condp
更多信息
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- This message is generated when a pattern expression appears on the right-hand side of a Condition pattern.
- This message is a warning about a use of pattern expressions that is often an error. In most useful patterns, pattern expressions will only appear on the left-hand side of a condition.
- Pattern expressions associated with this warning are typically entered using the underscore character, such as p_, and Condition[patt, cond] is typically entered as patt/;cond. This message can be generated if underscore patterns occur within cond.
- Off[message] switches off the message; On[message] switches it on. For example: Off[Condition::condp].
