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Head

Head[expr]
gives the head of expr.
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Basic Examples   (2)
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Generalizations & Extensions   (1)
Heads need not be symbols:
Applications   (2)
Find the cases with a head of Integer:
Define a function that only applies to individual symbols:
Properties & Relations   (1)
The head is the part with index :
Possible Issues   (1)
The head is based on FullForm:
Neat Examples   (1)
Head always eventually burrows to a symbol:
New in 1
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