Boost C++ Libraries

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arg

Designate a named argument for a replacement field.

Synopsis

Defined in header <boost/url/format.hpp>

template<
    class T>
implementation-defined
arg(
    string_view name,
    T const& arg);

Description

Construct a named argument for a format URL string that contains named replacement fields. The function parameters should be convertible to an implementation defined type able to store the name and a reference to any type potentially used as a format argument.

Example

assert(format("user/{id}", arg("id", 1)).buffer() == "user/1");

Return Value

An temporary object with reference semantics for a named argument

Parameters

Name	Description
`name`	The argument name
`arg`	The argument value

See Also

format, format_to.

Convenience header <boost/url.hpp>