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What does template mean?
...
It's perfectly possible to template a class on an integer rather than a type. We can assign the templated value to a variable, or otherwise manipulate it in a way we might with any other integer literal:
unsigned int x = N;
In fact, we can create algorithms which evaluat...
Are types like uint32, int32, uint64, int64 defined in any stdlib header?
I often see source code using types like uint32, uint64 and I wonder if they should be defined by the programmer in the application code or if they are defined in a standard lib header.
...
Parse date string and change format
...
convert string to datetime object
from datetime import datetime
s = "2016-03-26T09:25:55.000Z"
f = "%Y-%m-%dT%H:%M:%S.%fZ"
out = datetime.strptime(s, f)
print(out)
output:
2016-03-26 09:25:55
...
C# Sort and OrderBy comparison
...am
{
class NameComparer : IComparer<string>
{
public int Compare(string x, string y)
{
return string.Compare(x, y, true);
}
}
class Person
{
public Person(string id, string name)
{
Id = id;
Name = ...
How does the static modifier affect this code?
...uctor, hence the value of num1 and num2 becomes 1.
And then, again, static int num2=0; will be executed, which makes num2 = 0;.
Now, suppose your constructor is like this:
private A(){
num1++;
num2++;
System.out.println(obj.toString());
}
This will throw a NullPointerException as ob...
Command line progress bar in Java
... - it goes back to the start of the same line.
So the thing to do is to print your progress bar, for example, by printing the string
"|======== |\r"
On the next tick of the progress bar, overwrite the same line with a longer bar. (because we are using \r, we stay on the same line) For ex...
google mock分享（全网最全最好的gmock文档，没有之一） - C/C++ - 清泛网 ...
...这么一个接口（万幸，他至少把接口定义好了）：
FooInterface.h
#ifndef FOOINTERFACE_H_
#define FOOINTERFACE_H_
#include <string>
namespace seamless {
class FooInterface {
public:
virtual ~FooInterface() {}
public:
virtual std::string g...
Why can't I initialize non-const static member or static array in class?
...tatic data members in class?
The C++ standard allows only static constant integral or enumeration types to be initialized inside the class. This is the reason a is allowed to be initialized while others are not.
Reference:
C++03 9.4.2 Static data members
§4
If a static data member is of const...
Determine if two rectangles overlap each other?
...rd time visualizing why it works, I made an example page at silentmatt.com/intersection.html where you can drag rectangles around and see the comparisons.
– Matthew Crumley
Nov 20 '08 at 22:20
...
Difference between pre-increment and post-increment in a loop?
...d 1 to a, returns the new value.
C#:
string[] items = {"a","b","c","d"};
int i = 0;
foreach (string item in items)
{
Console.WriteLine(++i);
}
Console.WriteLine("");
i = 0;
foreach (string item in items)
{
Console.WriteLine(i++);
}
Output:
1
2
3
4
0
1
2
3
foreach and while loops dep...