DownValues::vlist UpValues::vlist OwnValues::vlist FormatValues::vlist DefaultValues::vlist NValues::vlist Messages::vlist SubValues::vlist

Details

This message is generated when the right-hand side of the indicated assignment is not a list of rules.
This message is generated only by direct assignments to the values of a symbol.
Definitions are usually added using ordinary assignments, rather than using direct assignments to the values of a symbol.
Values stored in the internal structure of a symbol are represented using lists of rules.
Off[message] switches off the message; On[message] switches it on. For example: Off[DownValues::vlist].

Examples

The right-hand side of the assignment is not a list of rules:

Wolfram Language code: Messages[fsym] = "text of message"

This shows a valid assignment for the messages of a symbol:

Wolfram Language code: Messages[fsym] = {HoldPattern[fsym::tag] :> "text of message"}

The same message can be introduced using a simple assignment:

Wolfram Language code: fsym::tag = "text of message"

This shows the message that was introduced by the assignment:

Wolfram Language code: Messages[fsym]

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