• ← $RecursionLimit
• → Hold

Evaluate

WMA link

Evaluate[expr]

forces evaluation of expr, even if it occurs inside a
held argument or a Hold form.

Create a function f with a held argument:

• • SetAttributes[f, HoldAll]

• • f[1 + 2]

Evaluate forces evaluation of the argument, even though f has
the HoldAll attribute:

• • f[Evaluate[1 + 2]]

• • Hold[Evaluate[1 + 2]]

• • HoldComplete[Evaluate[1 + 2]]

• • Evaluate[Sequence[1, 2]]