Head

Head(expr)

returns the head of the expression or atom expr.

Head(expr, newHead)

returns newHead(Head(expr)).

Examples

>> Head(a * b)
Times

>> Head(6)
Integer

>> Head(6+I)
Complex

>> Head(6.0)
Real

>> Head(6.0+I)
Complex

>> Head(3/4)
Rational

>> Head(x)
Symbol

Implementation status

• ✅ - full supported

Github

• Implementation of Head