[#ArgsManager-GetArg-0b]
= xref:ArgsManager.adoc[ArgsManager]::GetArg
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`GetArg` overloads

== Synopses

Declared in `<common/args.h>`

Return string argument, or std::nullopt if it was not set.


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[[requires_capability(0x7f2e381ad368)]]
std::optional<std::string>
xref:ArgsManager/GetArg-0f.adoc[GetArg](std::string const& strArg) const;
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Return integer argument, or std::nullopt if it was not set.


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template<std::integral Int>
[[requires_capability(0x7f2e381ad728)]]
std::optional<Int>
xref:ArgsManager/GetArg-00.adoc[GetArg](std::string const& strArg) const;
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Return string argument or default value


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[[requires_capability(0x7f2e381ad228)]]
std::string
xref:ArgsManager/GetArg-06.adoc[GetArg](
    std::string const& strArg,
    std::string const& strDefault) const;
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Return integer argument or default value


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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template<std::integral Int>
[[requires_capability(0x7f2e381ad5e8)]]
Int
xref:ArgsManager/GetArg-08.adoc[GetArg](
    std::string const& strArg,
    Int nDefault) const;
----

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== Return Value

* The argument value, or std::nullopt if unset.
* The integer value, or std::nullopt if unset.
* command‐line argument or default value
* command‐line argument (0 if invalid number) or default value

== Parameters

[cols="1,4"]
|===
| Name| Description
| *strArg*
| Argument to get (e.g. "‐foo").
| *strDefault*
| (e.g. "1")
| *nDefault*
| (e.g. 1)
|===


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