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

Enumerate the sources of input when parsing an option type&period;

== Synopsis

Declared in `&lt;balcl&lowbar;typeinfo&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
enum ParseInputSource;
----

== Description

This enumeration differentiates the source of input when parsing an option type&period; Note that boolean options, in particular, are treated differently when supplied on the command line from how they are treated when supplied by an environment variable (see &apos;balcl&lowbar;commandline&apos;)&period;

== Members

[cols="1,4"]
|===
| Name| Description
| `e&lowbar;COMMAND&lowbar;LINE` 
| input came from the command line
| `e&lowbar;ENVIRONMENT&lowbar;VARIABLE` 
| input came from an environment variable
|===



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