this strongly depends on the language and library you're using. Some object oriented languages support a notion of reflection or introspection, where you can use a built in api to query objects, iterate over their methods and even invoke them. C++ has RTTI, java has java.lang.reflect or something simillar.
To implement simillar behavior in C, with gcc,
1. compile your program with --export-dynamic on the gcc command line 2. link with -ldl (dynamic library handling, needed for dlopen and dlsym 3. call dlopen() with a null parameter, meaning you aren't loading symbols from a file but from the current executable 4. call dlsym() with the name of the function you'll be calling. Note that C++ modifies function names, so If you're trying this with C++, you'd have to either declare this function as extern "C", or figure out what name the function has after compiling. (On unix, you could run nm -s on the object file for this). 5. if dlsym() returns non-null, use the returned value as a function pointer to invoke your function.
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RE: How can I call a function, given its name as a st...
Just call the function names string as string() if the string function have no parameter if it have parameter then pass the corresponig value through the function call
RE: How can I call a function, given its name as a st...
this strongly depends on the language and library you're using. Some object oriented languages support a notion of reflection or introspection, where you can use a built in api to query objects, iterate over their methods and even invoke them. C++ has RTTI, java has java.lang.reflect or something simillar.
To implement simillar behavior in C, with gcc,
1. compile your program with --export-dynamic on the gcc command line 2. link with -ldl (dynamic library handling, needed for dlopen and dlsym 3. call dlopen() with a null parameter, meaning you aren't loading symbols from a file but from the current executable 4. call dlsym() with the name of the function you'll be calling. Note that C++ modifies function names, so If you're trying this with C++, you'd have to either declare this function as extern "C", or figure out what name the function has after compiling. (On unix, you could run nm -s on the object file for this). 5. if dlsym() returns non-null, use the returned value as a function pointer to invoke your function.
RE: How can I call a function, given its name as a st...
Hi, This is a typical example of reflection. If you are using .NET then use reflection for this purpose. In this case you create an object of a particular type and the invoke methods at run time by passing function name.
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