mirror of
https://github.com/triqs/dft_tools
synced 2024-11-01 19:53:45 +01:00
3fe400d34c
- examples split from the rst file using a python script (split_code). - Final result for the doc is unchanged. - examples are compiled and tested with the other tests. - examples' code have been clang-formatted, with triqs style. - doc compiles much faster, and with the same options as the rest of the test. - examples are added as tests, so they are run by make test, as simple C tests. - done for the tutorials and the reference. - autocompile removed (changed into triqs_example directive). - add triqs_example : - make a literal include of the source code. - runs the compiled example - add, as before, the result to the source code in the doc. - added the script split_code, used to make the changes automatically, maybe for later reuse. (in _tools)
54 lines
1.5 KiB
ReStructuredText
54 lines
1.5 KiB
ReStructuredText
.. highlight:: c
|
|
|
|
Overloading functions and methods for CLEF arguments
|
|
=====================================================
|
|
|
|
.. _overload_function:
|
|
|
|
Overloading functions
|
|
----------------------------
|
|
|
|
Given a function, it is possible to overload it for CLEF expression arguments, returning a CLEF expression
|
|
using the `TRIQS_CLEF_MAKE_FNT_LAZY` macro.
|
|
|
|
**Synopsis** ::
|
|
|
|
namespace triqs { namespace clef {
|
|
TRIQS_CLEF_MAKE_FNT_LAZY (function_to_make_lazy);
|
|
}}
|
|
|
|
For example:
|
|
|
|
.. triqs_example:: ./overload_0.cpp
|
|
Note that :
|
|
|
|
* This overload **must** be defined in the triqs::clef namespace, since it is found by ADL.
|
|
* The function `foo` can have many overloads.
|
|
* The function `bar` can be a template, BUT then the template must be disabled for lazy expressions.
|
|
* The overload is already defined by clef for usual functions :
|
|
|
|
.. triqs_example:: ./overload_1.cpp
|
|
.. _callable_object:
|
|
|
|
Overloading operator() and other methods
|
|
---------------------------------------------------
|
|
|
|
|
|
Similarly to functions, classes can define an `operator()` for CLEF expressions arguments (or any other method).
|
|
It is an ordinary operator() that must :
|
|
|
|
* Be enabled only when one argument is a CLEF expression
|
|
* Return a CLEF expression.
|
|
|
|
Example :
|
|
|
|
.. triqs_example:: ./overload_2.cpp
|
|
**NB** When the method or the non CLEF operator() is already a template,
|
|
it must be disabled for clef expression argument, using the trait ::
|
|
|
|
clef::is_clef_expression<T...> // true iif one of the T is a clef expression
|
|
|
|
as the `bar` function above.
|
|
|
|
|