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Template documentation

This is one of the family of templates used for creation of declaration lists.

List template families

• dsc **** : For creation of member variable/function lists.
• dcl **** : For creation of detailed declaration lists (those including actual declaration code).
• sdsc **** : For creation of lists representing various syntaxes of a language feature. Used in subpages of cpp/language.
• par **** : For creation of lists explaining function parameters.
• spar **** : For creation of lists explaining syntax parameters.
• nv **** : For creation of feature lists in navbars.
• elink **** : For creation of External links lists.

{{dcl begin}}

Starts the declaration list.

{{dcl end}}

Ends the declaration list. This template automatically adds {{dcl sep}} above the item.

{{dcl rev begin|num=num (optional)}}

Starts versioned declaration list.

• num (optional) may be used for numbering purposes (overrides the num parameter of the {{dcl}} templates used within the versioned list (i.e., until {{dcl rev end}}).

{{dcl rev end}}

Ends versioned declaration list.

{{dcl header|header }}

Adds explanation which header the feature comes from.

{{dcl sep}}

Adds a separator.

{{dcl h|heading }}

Adds a small heading. Useful to split and describe large groups of related declarations.

{{dcl|declaration |notes=notes (optional)|num=num (optional)|since=since-std (optional)|until=until-std (optional)|deprecated=deprecated-std (optional)|removed=removed-std (optional)}}

Adds an item to the declaration list. This template automatically adds {{dcl sep}} above the item.

• declaration is the declaration of the feature.
• notes (optional) may be used to add notes about the feature.
• num (optional) may be used for numbering purposes.
• since (optional) specifies the first standard the definition appears in
• until (optional) specifies the first standard that does not include this definition
• deprecated (optional) either specifies the first standard that deprecated this definition, or is equal to yes, in which case it specifies that the definition has always been deprecated.
• removed (optional) can be used in one of two ways:
  • When until is specified, it specifies whether the "until" marker should be rendered as "removed in" instead, and can be either yes or no.
  • If missing, defaults to yes if deprecated is specified and no otherwise.
  • When until is not specified, removed=x is equivalent to until=x|removed=yes.

{{dcla|parameters of {{dcl}} |anchor=name-or-no (optional)|noexcept=noexcept-std (optional)|constexpr=constexpr-std (optional)|expos=yes (optional)}}

Same as {{dcl}}, with extended parameter set and with and additional ability to generate an internal HTML anchor.

• anchor (optional)
  • When specified and its value is no – does nothing. Otherwise, inserts into the current row the anchor with provided name.
  • When not specified, the anchor is inserted only if the parameter num is specified. In such a case the anchor's name follows the pattern: "Version num" where num equals the num's value, e.g., if num=1 then the anchor's name is "Version 1". The dependency on num param simplifies the anchor/link connection when used together with e.g. {{vl}} or {{eq impl}} that also expect "Version n" link's name pattern.
• noexcept (optional)
  • When specified, uses its value, e.g. c++11, to add the "noexcept"-revision tag (i.e. (noexcept since C++11) in this case), to the versioning area.
• constexpr (optional)
  • When specified, uses its value, e.g. c++20, to add the "constexpr"-revision tag (i.e. (constexpr since C++20) in this case), to the versioning area.
• expos (optional)
  • When specified with the value yes adds (exposition only*) note to the versioning area.

{{ddcl|header=header (optional)|parameters of {{dcl}} }}

A convenience shorthand for combination: {{dcl header}} + {{dcl begin}} + {{dcl ...}} + {{dcl end}} when only one declaration need to be described.

{{ddcla|header=header (optional)|parameters of {{dcla}} }}

A convenience shorthand for combination: {{dcl header}} + {{dcl begin}} + {{dcla ...}} + {{dcl end}} when only one declaration need to be described.

{{dcl rev multi|num=num (optional)|anchor=num (optional)|notes=notes (optional)|since1=since-std1 |until1=until-std1 |dcl1=declaration1 |... }}

Single-template versioned declaration list; up to 7 versions are supported. The default for sinceX is untilX-1 and the default for untilX is sinceX+1.

When anchor is specified the {{dcl rev multi}} generates an internal HTML anchor with the name "Version anchor ", e.g. given anchor=X3, the anchor name would be "Version X3". Usually, the value of anchor is same as the value of num. The generated anchor is useful to link to it from e.g. Possible implementation section.

Example

 
    {{dcl header | abcd.h}}
    {{dcl | notes=Faster than {{c|foo_slow}} | num=1 |
    int foo( char a );
    }}
    {{dcl | since=c++11 | num=2 |
    int foo( char a, int b );
    }}
    {{dcl rev begin | num=3}}
    {{dcl | until=c++11 | 1=
    int foo( char a, char b = 'a' );
    }}
    {{dcl | since=c++11 | until=c++14 | 1=
    int foo( char a, char b = 'b' );
    }}
    {{dcl | since=c++14 | 1=
    int foo( char a, char b = 'c' );
    }}
    {{dcl rev end}}
    {{dcl rev begin}}
    {{dcl | until=c++11 | num=4 | 1=
    int foo( char a, char b = 'a' );
    }}
    {{dcl | since=c++11 | until=c++14 | num=5 | 1=
    int foo( char a, char b = 'b' );
    }}
    {{dcl | since=c++14 | num=6 | 1=
    int foo( char a, char b = 'c' );
    }}
    {{dcl rev end}}
    {{dcl rev multi | num=7 | dcl1=
    int foo( char a, char b = 'a' );
    |since2=c++11 | dcl2=
    int foo( char a, char b = 'b' );
    |since3=c++14 | dcl3=
    int foo( char a, char b = 'c' );
    |since4=c++17 | dcl4=
    int foo( char a, char b = 'd' );
    }}
  

The above results in the following:

Defined in header <abcd.h>
int foo( char a );	(1)	Faster than foo_slow
int foo( char a, int b );	(2)	(since C++11)
	(3)
int foo( char a, char b = 'a' );			(until C++11)
int foo( char a, char b = 'b' );			(since C++11) (until C++14)
int foo( char a, char b = 'c' );			(since C++14)
int foo( char a, char b = 'a' );		(4)	(until C++11)
int foo( char a, char b = 'b' );		(5)	(since C++11) (until C++14)
int foo( char a, char b = 'c' );		(6)	(since C++14)
		(7)
int foo( char a, char b = 'a' );				(until C++11)
int foo( char a, char b = 'b' );				(since C++11) (until C++14)
int foo( char a, char b = 'c' );				(since C++14) (until C++17)
int foo( char a, char b = 'd' );				(since C++17)

Example

 
   {{ddcl | header=mutex | since=c++11 | 1=
   template< class Lockable1, class Lockable2, class... LockableN >
   void lock( Lockable1& lock1, Lockable2& lock2, LockableN&... lockn );
   }}
  

The above results in the following:

Defined in header <mutex>
template< class Lockable1, class Lockable2, class... LockableN > void lock( Lockable1& lock1, Lockable2& lock2, LockableN&... lockn );		(since C++11)