Throw format_error when visiting an empty format argument.
Synopsis
Declared in <bslfmt_formatterspecificationnumericvalue.h>
void
operator()(std::monostate value) const;Description
This indicates visitation of an argument with no value, which would indicate a logic error. Note that this would only be called when extracting a value from a basic_format_arg that holds no value, which would normally indicate an incorrect argument type.
Parameters
Name |
Description |
value |
empty monostate argument (unused) |
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