Function Templates
Function Templates
Generic function for different types.
E.g.
get the min value of three variables (int, float, char…)
Define function templates
46.cpp
Template<class
S, class T…>
func_name(…)
Func_name<type
name>(…)
something like macro
More powerful than macro
 |
| Function Templates |
Using template functions
Func_name<type_name list>(…)
47.cpp
Generic quick sort 47-1.cpp
Class templates
Generic
classes
Define
class templates
Template<class T>
Class
{…}
Template<class
T>
ret_type class_name<type_name>
::
func_name ( … ){
}
48.cpp
Class template examples
Class_name<type_name..> obj…
Array class 49.cpp
Linked list 50.cpp
overload template
functions
It is possible to overload a template function.
51.cpp
Template specialization
An example from www.cplusplus.com
52.cpp
template <> class class_name <type>
Default value for
templates paramters
template <class T = char> // With a default value.
template <int Tfunc (int)> // A function as parameter.
the implementation (definition) of a template class or
function must be in the same file as the declaration.
Execptions
try
{ //
code to be tried
throw exception; }
catch (type exception)
{ //
code to be executed in case of exception }
Uncaught exception
Uncaught exceptions will be thrown into outer scope.
If no catch, usually program will terminate.
Void terminate();
I/O system
iostream.h
cin,cout,cerr,clog
iostream,fstream,strstream
Flags 57.cpp 58.cpp
Overload “<<“ 59.cpp
60.cpp 61.cpp 62.cpp 63.cpp 64.cpp