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计算统计特征（正态分布）函数及实例 - C/C++ - 清泛网 - 专注C/C++及内核技术
...及实例main函数：#include "stdafx.h"#include "stdev.h"#include <map>int _tmain(int argc, _TCHAR* argv[]){std::map<int, int> map_...main函数：
#include "stdafx.h"
#include "stdev.h"
#include <map>
int _tmain(int argc, _TCHAR* argv[])
{
std::map<int, int> map_test;
map_test[0] = 1...
GetType() can lie?
...c class BadFoo
{
public new Type GetType()
{
return typeof(int);
}
}
with this class (and using the sample code from the MSDN for the GetType() method) you could indeed have:
int n1 = 12;
BadFoo foo = new BadFoo();
Console.WriteLine("n1 and n2 are the same type: {0}",
...
To ARC or not to ARC? What are the pros and cons? [closed]
...W, make sure to use of Xcode to do the transition (Edit > Refactor > Convert to Objective-C ARC). During the process Xcode would do a lot of validation to make sure your code would work and figure out any codes that violates those designing guidelines.
– ZhangChn
...
What's the difference between passing by reference vs. passing by value?
...to it, I'll change the caller's variable itself, not e.g. whatever it is pointing to if it's a pointer.
This is now considered bad practice (as an implicit dependency). As such, virtually all newer languages are exclusively, or almost exclusively pass-by-value. Pass-by-reference is now chiefly use...
Produce a random number in a range using C#
...
You can try
Random r = new Random();
int rInt = r.Next(0, 100); //for ints
int range = 100;
double rDouble = r.NextDouble()* range; //for doubles
Have a look at
Random Class, Random.Next Method (Int32, Int32) and Random.NextDouble Method
...
Elegant way to combine multiple collections of elements?
...llections, each containing objects of the same type (for example, List<int> foo and List<int> bar ). If these collections were themselves in a collection (e.g., of type List<List<int>> , I could use SelectMany to combine them all into one collection.
...
Sequence-zip function for c++11?
...gt;
#include <vector>
#include <list>
#include <string>
int main() {
std::vector<int> a {4, 5, 6};
double b[] = {7, 8, 9};
std::list<std::string> c {"a", "b", "c"};
for (auto tup : boost::combine(a, b, c, a)) { // <---
int x, w;
do...
Guid is all 0's (zeros)?
...
Does it compile into the same IL as default(S) or are there any subtleties I'm missing?
– configurator
Nov 2 '11 at 19:02
...
When to use “new” and when not to, in C++? [duplicate]
...ed when it goes out of scope. Some examples of this are:
void foo()
{
Point p = Point(0,0);
} // p is now destroyed.
for (...)
{
Point p = Point(0,0);
} // p is destroyed after each loop
Some people will say that the use of new decides whether your object is on the heap or the stack, but tha...
How to grep and replace
...
This touches every file so file times are modified; and converts line endings from CRLF to LF on Windows.
– jww
Oct 25 '17 at 0:21
...