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Is unsigned integer subtraction defined behavior?
...§6.2.5/9)
As you can see, (unsigned)0 - (unsigned)1 equals -1 modulo UINT_MAX+1, or in other words, UINT_MAX.
Note that although it does say "A computation involving unsigned operands can never overflow", which might lead you to believe that it applies only for exceeding the upper limit, this...
Why can templates only be implemented in the header file?
...ecific set of types, for instance numeric types: int8_t, int16_t, int32_t, uint8_t, uint16_t, etc. In this case, it still makes sense to use a template, but explicitly instantiating them for the whole set of types is also possible and, in my opinion, recommended.
– UncleZeiv
...
The maximum value for an int type in Go
...ement arithmetic, you can infer the
min/max constant values for int and uint. For example,
const MaxUint = ^uint(0)
const MinUint = 0
const MaxInt = int(MaxUint >> 1)
const MinInt = -MaxInt - 1
As per @CarelZA's comment:
uint8 : 0 to 255
uint16 : 0 to 65535
uint32 : 0 to 42949672...
When to use enumerateObjectsUsingBlock vs. for
...two versions:
for (id x in y){
}
[y enumerateObjectsUsingBlock:^(id x, NSUInteger index, BOOL *stop){
}];
Even if you add a variable to track the index, the simple loop is easier to read.
So when you should use enumerateObjectsUsingBlock:? When you're storing a block to execute later or in mult...
CMFCTabCtrl的使用、颜色样式调整 - C/C++ - 清泛网 - 专注C/C++及内核技术
...G_PIC,&m_wndTabs);
m_wndTabs.AddTab (& m_DlgPic, _T("测试对话框"), (UINT)-1, FALSE);
CMFCTabCtrl
How to use SCNetworkReachability in Swift
...> Bool {
var zeroAddress = sockaddr_in()
zeroAddress.sin_len = UInt8(sizeofValue(zeroAddress))
zeroAddress.sin_family = sa_family_t(AF_INET)
guard let defaultRouteReachability = withUnsafePointer(&zeroAddress, {
SCNetworkReachabilityCreateWithAddress(nil, UnsafePoint...
Why does int i = 1024 * 1024 * 1024 * 1024 compile without error?
...e behavior is defined unsigned integers (take the mathematical result, add UINT_MAX + 1 as long as the result is negative, subtract UINT_MAX + 1 as long as the result is greater than UINT_MAX).
In the case of Java, if the result of an operation with int values is not in the allowed range, conceptu...
Random / noise functions for GLSL
...
// A single iteration of Bob Jenkins' One-At-A-Time hashing algorithm.
uint hash( uint x ) {
x += ( x << 10u );
x ^= ( x >> 6u );
x += ( x << 3u );
x ^= ( x >> 11u );
x += ( x << 15u );
return x;
}
// Compound versions of the hashing alg...
How to Query an NTP Server using C#?
...yTime = 40;
//Get the seconds part
ulong intPart = BitConverter.ToUInt32(ntpData, serverReplyTime);
//Get the seconds fraction
ulong fractPart = BitConverter.ToUInt32(ntpData, serverReplyTime + 4);
//Convert From big-endian to little-endian
intPart = SwapEndianness(intPart...
How can I get `find` to ignore .svn directories?
... lots of duplicate results. For example, I want to recursively search for uint in multiple messages.h and messages.cpp files:
...