Function Repository Resource:

PossibleNameQ

Source Notebook

Test if an expression corresponds to a valid symbol name

Contributed by: Richard Hennigan (Wolfram Research)

ResourceFunction["PossibleNameQ"][expr]

gives True if expr is a string corresponding to a valid symbol and False otherwise.

Details

In ResourceFunction["PossibleNameQ"]["string"], the given string need not correspond to an existing symbol; instead, it only needs to be possible that it could be a symbol.

Examples

Basic Examples (5)

Test if a string is a valid symbol name:

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Test a fully qualified name:

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Non-string expressions cannot be symbol names:

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Test a string corresponding to a nonexistent symbol:

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Use a relative context:

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Properties and Relations (3)

PossibleNameQ only tests if the string corresponds to a valid symbol name:

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It doesn’t need to be an existing symbol:

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PossibleNameQ only tests if it can be a symbol:

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Related Links

Requirements

Wolfram Language 11.3 (March 2018) or above

Version History

2.0.0 – 22 November 2021

Related Resources

License Information

This work is licensed under a Creative Commons Attribution 4.0 International License