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What is the use of the %n format specifier in C?
...
void authorizeUser( char * username, char * password){
...code here setting authorized to false...
printf(username);
if ( authorized ) {
giveControl(username);
}
}
where a malicious user could take advantage of the username parameter getting passed into printf as the f...
How do you create a static class in C++?
...rser.cpp
bool BitParser::getBitAt(int buffer, int bitIndex)
{
bool isBitSet = false;
// .. determine if bit is set
return isBitSet;
}
You can use this code to call the method in the same way as your example code.
Hope that helps! Cheers.
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Function pointers, Closures, and Lambda
...et a pointer to a trampoline, a dynamically constructed piece of code that sets up the static link pointer and then calls the real function, which uses the static link pointer to access the variables of the outer function.
The upwards funargs problem is more difficult. GCC does not prevent you from...
What is exactly the base pointer and stack pointer? To what do they point?
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esp is as you say it is, the top of the stack.
ebp is usually set to esp at the start of the function. Function parameters and local variables are accessed by adding and subtracting, respectively, a constant offset from ebp. All x86 calling conventions define ebp as being preserved acr...
How to change the commit author for one specific commit?
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Use --no-edit option. git commit --amend --reset-author --no-edit won't open an editor. Available since git 1.7.9.
– 5lava
Jun 9 '14 at 18:43
58
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Deadly CORS when http://localhost is the origin
I am stuck with this CORS problem, even though I set the server (nginx/node.js) with the appropriate headers.
8 Answers
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Common elements comparison between 2 lists
... list1 = [1,2,3,4,5,6]
>>> list2 = [3, 5, 7, 9]
>>> list(set(list1).intersection(list2))
[3, 5]
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Rails 3.1: Engine vs. Mountable App
....draw do
end
3) The file structure for controllers, helpers, views, and assets will be namespaced:
create app/controllers/my_mountable_engine/application_controller.rb
create app/helpers/my_mountable_engine/application_helper.rb
create app/mailers create app/models
create app/views/layouts/my...
Hosting Git Repository in Windows
...win isn't a virtual machine, but a pre-packed suite of tools. It's just a set of Windows executables and dlls like everything else on your machine.
– Derek Greer
Mar 19 '15 at 13:01
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Static variable inside of a function in C
...e is outside of the function code proper.
The value of 5 is theoretically set regardless of whether or not foo is called at all, although a compiler might optimize the function away if you don't call it anywhere. The value of 5 should be in the variable before foo is ever called.
Inside of foo, th...