Head

Disponibile

Returns the head of an expression

Forme

Head[expr]

Head[expr, h]

Esempi verificatiHead[f[x, y]] → f Head[a + b + c] → Plus Head[{a, b, c}] → List Head[23432] → Integer Head[345.6] → Real

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Usata in

Linear algebra introduction matrices as wolfram language expressions - 5 passi

Argomenti

Atomic Elements Of Expressions - Symbols»
Expression Structure - Atomic Components of Expressions»
Expressions - Expression Structure »
Representation Of Numbers - Testing for Types

Correlate

Level Part Extract Heads CurryApplied Construct Depth FullForm Length TreeForm Accuracy AtomQ

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