[#BloombergLP-bslfmt-basic_format_string-2constructor]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslfmt.adoc[bslfmt]::xref:BloombergLP/bslfmt/basic_format_string.adoc[basic_format_string]::basic_format_string
:relfileprefix: ../../../
:mrdocs:

Create an instance of this type from the specified `str`. This function only takes part in overload resolution if `str` is convertible to a `basic_string_view`. Construction is ill‐formed if `str` is not a compile‐time constant.

== Synopsis

Declared in `<bslfmt_format_string.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class t_STR,
    class = void>
requires bsl::is_convertible<
                  const t_STR&,
                  bsl::basic_string_view<t_CHAR> >::value
consteval
basic_format_string(t_STR const& str);
----


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