Unset

Unset(expr)

or

expr =.

removes any definitions belonging to the left-hand-side expr.

Examples

>> a = 2
2

>> a =.

>> a
a

Unsetting an already unset or never defined variable will not change anything:

>> a =.

>> b =.

Unset can unset particular function values. It will print a message if no corresponding rule is found.

>> f[x_) =.
Assignment not found for: f(x_)

>> f(x_) := x ^ 2

>> f(3)
9

>> f(x_) =.

>> f(3)
f(3)

Implementation status

• ✅ - full supported

Github

• Implementation of Unset