Names

Names["string"]

gives a list of the names of symbols that match the string.

Names[patt]

gives a list of names matching the arbitrary string pattern patt.

Details and Options

  • Names["string"] gives the same list of names as ?string.
  • Names returns a list of strings corresponding to the names of symbols.
  • The pattern patt can be given as a string with metacharacters, as StringExpression[…] or as RegularExpression["regex"].
  • The string can contain the following metacharacters:
  • *match zero or more characters
    @match one or more characters, but not uppercase letters
  • Names["context`*"] lists all symbols in the specified context.
  • With SpellingCorrection->True, Names includes names that differ in a small fraction of their characters from those specifically requested.
  • With IgnoreCase->True or SpellingCorrection->True, Names treats lowercase and uppercase letters as equivalent when matching names.
  • Names[] lists all names in all contexts.

Examples

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Basic Examples  (2)

Get the names of symbols starting with List:

Get the names of all system symbols:

The set of those that have the Orderless attribute:

Scope  (2)

Find all 2-character system functions using StringExpression:

Find all 3-character system functions using RegularExpression:

Introduced in 1988
 (1.0)
 |
Updated in 2007
 (6.0)