[#BloombergLP-balcl]
= xref:BloombergLP.adoc[BloombergLP]::balcl
:relfileprefix: ../
:mrdocs:

Namespace for command‐line parsing components.

== Types

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/balcl/CommandLine.adoc[`CommandLine`] 
| This value‐semantic `class` parses, validates, and provides access to command‐line arguments.
| xref:BloombergLP/balcl/CommandLineOptionsHandle.adoc[`CommandLineOptionsHandle`] 
| This class provides access to the parsed options (if any) of its creating `CommandLine` object.
| xref:BloombergLP/balcl/CommandLine_SchemaData.adoc[`CommandLine_SchemaData`] 
| This `struct`, a pure value‐semantic type, is used to manage option value type and name information in support of public interfaces to parsed options.
| xref:BloombergLP/balcl/Constraint.adoc[`Constraint`] 
| This `struct` provides a namespace for constraint function signatures used with command‐line option values.
| xref:BloombergLP/balcl/OccurrenceInfo.adoc[`OccurrenceInfo`] 
| This `class` describes a command‐line option's occurrence requirement and default value.
| xref:BloombergLP/balcl/Option.adoc[`Option`] 
| This `class` is an allocator‐aware, in‐core descriptor for a command‐line option.
| xref:BloombergLP/balcl/OptionInfo.adoc[`OptionInfo`] 
| This `struct` describes the information associated with a command‐line option.
| xref:BloombergLP/balcl/OptionType.adoc[`OptionType`] 
| This `struct` provides a namespace for enumerating types used for command‐line option values. See {Enumerators} for details.
| xref:BloombergLP/balcl/OptionValue.adoc[`OptionValue`] 
| This class implements a special‐use value‐semantic variant type used to represent values parsed from process command lines.
| xref:BloombergLP/balcl/OptionValue_NullOf.adoc[`OptionValue_NullOf`] 
| This single‐attribute class represents a null value of a given nullable `balcl::OptionType`.
| xref:BloombergLP/balcl/TypeInfo.adoc[`TypeInfo`] 
| This `class` describes an option's type, linked variable, and constraint.
| xref:BloombergLP/balcl/TypeInfoConstraint.adoc[`TypeInfoConstraint`] 
| Component‐private protocol class for opaque option value constraints.
| xref:BloombergLP/balcl/TypeInfoUtil.adoc[`TypeInfoUtil`] 
| This utility `struct` provides a namespace for functions that perform non‐primitive operations using `TypeInfo` objects.
|===


== Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/balcl/swap.adoc[`swap`] 
| Swap the value of the specified `a` object with the value of the specified `b` object.
| xref:BloombergLP/balcl/operator_lshift-07c.adoc[`operator<<`] 
| Stream insertion operators
| xref:BloombergLP/balcl/operator_eq-08.adoc[`operator==`] 
| Equality operators
| xref:BloombergLP/balcl/operator_not_eq-06957.adoc[`operator!=`] 
| Inequality operators
|===



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