Return

Return(expr)

aborts a function call and returns expr.

Examples

>> f(x_) := (If(x < 0, Return(0)); x)

>> f(-1)
0

>> Do(If(i > 3, Return()); Print(i), {i, 10})
 | 1
 | 2
 | 3

Return only exits from the innermost control flow construct.

>> g(x_) := (Do(If(x < 0, Return(0)), {i, {2, 1, 0, -1}}); x)

>> g(-1)
-1

>> h(x_) := (If(x < 0, Return()); x)

>> h(1)
1

>> h(-1) // FullForm
Null

>> f(x_) := Return(x)

>> g(y_) := Module({}, z = f(y); 2)

>> g(1)
2

Implementation status

• ✅ - full supported

Github

• Implementation of Return