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How do I create a category in Xcode 6 or higher?
I want to create a category on UIColor in my app using Xcode 6. But the thing is that in Xcode 6 there is no Objective-C category file template.
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What is size_t in C?
I am getting confused with size_t in C. I know that it is returned by the sizeof operator. But what exactly is it? Is it a data type?
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How to specialize std::hash::operator() for user-defined type in unordered containers?
...::unordered_set<Key> and std::unordered_map<Key, Value>
one has to provide operator==(Key, Key) and a hash functor:
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How to manually expand a special variable (ex: ~ tilde) in bash
I have a variable in my bash script whose value is something like this:
15 Answers
15
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How can I get a file's size in C? [duplicate]
How can I find out the size of a file I opened with an application written in C ?
I would like to know the size, because I want to put the content of the loaded file into a string, which I allocate using malloc() . Just writing malloc(10000*sizeof(char)); is IMHO a bad idea.
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How to do scanf for single char in C [duplicate]
In C:
I'm trying to get char from the user with scanf and when I run it the program don't wait for the user to type anything...
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Big-O summary for Java Collections Framework implementations? [closed]
I may be teaching a "Java crash-course" soon. While it is probably safe to assume that the audience members will know Big-O notation, it is probably not safe to assume that they will know what the order of the various operations on various collection implementations is.
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ios simulator: how to close an app
When you "run" the simulator from xCode, the app automatically launches, and then you can click the home button to suspend the app. What I want to do is close the app from within the simulator. So, how can this be done?
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libcurl的使用总结 - C/C++ - 清泛网 - 专注C/C++及内核技术
libcurl的使用总结最近的项目中由于要在C++代码中调用PHP的URL，所以不得不借助libcurl这个库，由于第一次用，所以很多地方很是纠结，特此写在这里，方便给同...最近的项目中由于要在C++代码中调用PHP的URL，所以不得不借助libcurl...
Correctly determine if date string is a valid date in that format
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You can use DateTime class for this purpose:
function validateDate($date, $format = 'Y-m-d')
{
$d = DateTime::createFromFormat($format, $date);
// The Y ( 4 digits year ) returns TRUE for any integer with any number of digits so changing the compar...