[#nlohmann-basic_json-00-accept-0c]
= xref:nlohmann.adoc[nlohmann]::xref:nlohmann/basic_json-00.adoc[basic_json]::accept
:relfileprefix: ../../
:mrdocs:

check if the input is valid JSON (iterator pair, or iterator+sentinel pair for C++20 ranges support)

== Synopsis

Declared in `<nlohmann/json.hpp>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename IteratorType,
    typename SentinelType = IteratorType>
requires detail::can_compare_ne<IteratorType, SentinelType>::value
static
bool
accept(
    IteratorType first,
    SentinelType last,
    bool const ignore_comments = false,
    bool const ignore_trailing_commas = false);
----


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