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What is uint_fast32_t and why should it be used instead of the regular int and uint32_t?
...ract the low-level representation and make it easier to comprehend ( uint64_t instead of long long type, which is 8 bytes).
...
Passing variable number of arguments around
...
To pass the ellipses on, you have to convert them to a va_list and use that va_list in your second function. Specifically;
void format_string(char *fmt,va_list argptr, char *formatted_string);
void debug_print(int dbg_lvl, char *fmt, ...)
{
char formatted_string[MAX_FMT_SI...
No ConcurrentList in .Net 4.0?
...T>, IDisposable
{
#region Fields
private readonly List<T> _list;
private readonly ReaderWriterLockSlim _lock;
#endregion
#region Constructors
public ConcurrentList()
{
this._lock = new ReaderWriterLockSlim(LockRecursionPolicy.NoRecursion);
this._...
How do I get the function name inside a function in PHP?
...
The accurate way is to use the __FUNCTION__ predefined magic constant.
Example:
class Test {
function MethodA(){
echo __FUNCTION__;
}
}
Result: MethodA.
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...
pip broke. how to fix DistributionNotFound error?
...s problem in my MacBook, the reason is because as @Stephan said, I use easy_install to install pip, and the mixture of both py package manage tools led to the pkg_resources.DistributionNotFound problem.
The resolve is:
easy_install --upgrade pip
Remember: just use one of the above tools to manag...
unique object identifier in javascript
... var id = 0;
Object.id = function(o) {
if ( typeof o.__uniqueid == "undefined" ) {
Object.defineProperty(o, "__uniqueid", {
value: ++id,
enumerable: false,
// This could go either way, depending on your...
What exactly does += do in python?
...
In Python, += is sugar coating for the __iadd__ special method, or __add__ or __radd__ if __iadd__ isn't present. The __iadd__ method of a class can do anything it wants. The list object implements it and uses it to iterate over an iterable object appending each...
How do I get the filepath for a class in Python?
...u can use the inspect module, like this:
import inspect
inspect.getfile(C.__class__)
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Django filter queryset __in for *every* item in list
...oManyField('Tag')
class Tag(models.Model):
name = models.CharField(max_length=50)
def __unicode__(self):
return self.name
In [2]: t1 = Tag.objects.create(name='holiday')
In [3]: t2 = Tag.objects.create(name='summer')
In [4]: p = Photo.objects.create()
In [5]: p.tags.add(t1)
In [6]...
解决：Run-Time Check Failure #0，The value of ESP was not properly sav...
...就可以在定义该函数的时候加上一句话，
FAR PASCAL 或者 __stdcall 这个就OK了。
具体做法：
比如说你要定义一个 返回类型为空，参数为空的函数指针：
typedef void （*LPFUN）（void）;
这样确实跟我们dll里的函数匹配了，上面也说...