18.14.3 For Clause Macros

8.16.0.2

18.14.3 For Clause Macros🔗ℹ

space

The space for bindings of identifiers that implement for clauses.

definition

Similar to defn.macro, but defines a name in the for_clause space as a clause form for use within a for body.

The compile-time body block returns the expansion result. The result must be a sequence of groups to be spliced in place of the macro use, where each group can be either a another for clause, an expression, or a definition.

for_clause.macro 'each_in_three $id':
'def three: 3
each $id in 0..three'

> for List:
each_in_three i
i
[0, 1, 2]

1	Notation and Conventions
2	Implicits and Context
3	Names and Definitions
4	Functions and Operators
5	Comparison and Branching
6	Objects and Annotations
7	Basic Data
8	Collections and Iteration
9	Object Protocols
10	Higher-Order Control
11	Code as Data
12	String Formatting and Matching
13	Input and Output
14	Operating System
15	Threads and Concurrency
16	Reflection and Security
17	Runtime System
18	Meta and Macros

18.1	Meta Definitions and Expressions
18.2	Spaces
18.3	Namespace Space
18.4	Definition Macros
18.5	Declaration Macros
18.6	Expression Macros
18.7	Assignment Macros
18.8	Binding Macros
18.9	Annotation Macros
18.10	Static Information
18.11	Dot Providers
18.12	Repetition Macros
18.13	Operator Orders
18.14	Form-Specific Macros
18.15	Syntax Objects in Macros
18.16	Syntax Parameters
18.17	Syntax Object Maps
18.18	Documentation Metadata

18.14.1	Import Macros
18.14.2	Export Macros
18.14.3	For Clause Macros
18.14.4	Sequence Macros
18.14.5	Reducer Macros
18.14.6	Class, Interface, and Veneer Clause Macros
18.14.7	Unquote Binding Macros
18.14.8	Syntax Class Clause Macros
18.14.9	Syntax Pattern Clause Macros
18.14.10	Entry Point Macros
18.14.11	Immediate Callee Macros
18.14.12	Map Configurations