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Return a `struct` from a function in C
...return values, and assignment.
Here's a simple demonstration program that does all three - passes a structure as a parameter, returns a structure from a function, and uses structures in assignment statements:
#include <stdio.h>
struct a {
int i;
};
struct a f(struct a x)
{
struct a r...
What is the best way to create constants in Objective-C
...ile to make the constants available to all the files. Is it a good way of doing things? Also, I've done my research and found several methods to create constants, but I don't know which one to use:
...
How can you iterate over the elements of an std::tuple?
...
Boost.Fusion is a possibility:
Untested example:
struct DoSomething
{
template<typename T>
void operator()(T& t) const
{
t.do_sth();
}
};
tuple<....> t = ...;
boost::fusion::for_each(t, DoSomething());
...
Passing base64 encoded strings in URL
... certain situations; while replacing those characters with some other will do the trick while preserving same length. And it's quite standard solution too.
– Michał Górny
Sep 3 '09 at 20:58
...
Use of .apply() with 'new' operator. Is this possible?
...ion that takes a limited number of arguments. The bind method allows us to do it like so:
var f = Cls.bind(anything, arg1, arg2, ...);
result = new f();
The anything parameter doesn't matter much, since the new keyword resets f's context. However, it is required for syntactical reasons. Now, for th...
How to convert a std::string to const char* or char*?
... = str.c_str();
If you want to get a writable copy, like char *, you can do that with this:
std::string str;
char * writable = new char[str.size() + 1];
std::copy(str.begin(), str.end(), writable);
writable[str.size()] = '\0'; // don't forget the terminating 0
// don't forget to free the string ...
Lua简明教程 - 脚本技术 - 清泛IT论坛，有思想、有深度
...释
--[[
这是块注释
这是块注释
变量Lua的数字只有double型，64bits，你不必担心Lua处理浮点数会慢（除非大于100,000,000,000,000），或是会有精度问题。你可以以如下的方式表示数字，0x开头的16进制和C是很像的。num = 1024
num = 3...
Any way to clear python's IDLE window?
I know there's a similar topic about python console, but I do not know if they are the same. I tried system("clear") and it didn't work here.
...
Should Github be used as a CDN for javascript libraries? [closed]
...avascript libraries from a CDN instead of your own server comes with tremendous advantages. Less work for your server, possibility for the CDN to have a copy closer to the user than your server, but most importantly a good chance that your user's browser already has it cached from that URL. The la...
ListView addHeaderView causes position to increase by one?
....getItem(position) as the ListView version accounts for the headers, ie:-
Do this instead:
myListView.getItemAtPosition(position)
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