Name Rascal/Expressions/Selection

Synopsis Retrieve the value of an Annotation.

Syntax Expr @ Name

Types

Expr	Expr @ Name
T <: node	Determined by annotation declaration of Name

Description Retrieves the value of annotation Name of the value of Exp (may be undefined!). Also see Replacement for replacing the value of an annotation.

Examples

rascal>anno str node @ color;
ok
rascal>anno str node @ size;
ok
rascal>F = "fn"(123, "abc");
node: "fn"(123,"abc")
rascal>F = F[@color="red"];
node: "fn"(123,"abc")[
  @color="red"
]
rascal>F = F[@size="10"];
node: "fn"(123,"abc")[
  @color="red",
  @size="10"
]
rascal>F@color;
str: "red"

[Edit] | [New Subconcept] | [Recompile Course] | [Warnings]