Invoke the specified visitor functor on the value contained by the specified arg, providing that functor non‐modifiable access to that value. visitor must be a variant‐style functor that is able to visit all supported types listed in the {DESCRIPTION}.

Synopsis

Declared in <bslfmt_format_arg.h>

template<
    class t_VISITOR,
    class t_CONTEXT>
decltype(auto)
visit_format_arg(
    t_VISITOR&& visitor,
    basic_format_arg<t_CONTEXT> arg);

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