======Конструктор AstSliceExpression(AstExpression, AstExpression, AstExpression, Boolean)======
  * **Пространство имен:** [[developers:references:topomatic.crs.ast|Topomatic.Crs.Ast]]
  * **Сборка:** Topomatic.Crs (в Topomatic.Crs.dll)
=====Синтаксис=====
<code csharp>public  AstSliceExpression(AstExpression start, AstExpression stop, AstExpression step, bool stepProvided)</code>
**Параметры**
  * //start//
    * Тип: [[developers:references:topomatic.crs.ast.astexpression|Topomatic.Crs.Ast.AstExpression]]

  * //stop//
    * Тип: [[developers:references:topomatic.crs.ast.astexpression|Topomatic.Crs.Ast.AstExpression]]

  * //step//
    * Тип: [[developers:references:topomatic.crs.ast.astexpression|Topomatic.Crs.Ast.AstExpression]]

  * //stepProvided//
    * Тип: [[developers:references:system.boolean|System.Boolean]]