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Names

WMA link

Names["pattern"]

returns the list of names matching pattern.

• • Names["List"]

The wildcard * matches any character:

• • Names["List*"]

The wildcard @ matches only lowercase characters:

• • Names["List@"]

• • x = 5;

• • Names["Global`*"]

The number of built-in symbols:

• • Length[Names["System`*"]]