---
description: "Learn more about: Expression functions"
title: "Expression functions"
ms.date: 5/16/2022
ms.custom: "nonautomated-date"
---
# Expression functions

These functions allow the construction and evaluation of M code.

|Name|Description|
|------------|---------------|
|[Expression.Constant](expression-constant.md)|Returns the M source code representation of a constant value.|
|[Expression.Evaluate](expression-evaluate.md)|Returns the result of evaluating an M expression.|
|[Expression.Identifier](expression-identifier.md)|Returns the M source code representation of an identifier.|
