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What is the difference between an int and an Integer in Java and C#?
... Integer:
Integer i = new Integer(6);
You could call some method on i:
String s = i.toString();//sets s the string representation of i
Whereas with an int:
int i = 6;
You cannot call any methods on it, because it is simply a primitive. So:
String s = i.toString();//will not work!!!
would...
Regex: ignore case sensitivity
...ld look for the i flag. Nearly all regex engines support it:
/G[a-b].*/i
string.match("G[a-b].*", "i")
Check the documentation for your language/platform/tool to find how the matching modes are specified.
If you want only part of the regex to be case insensitive (as my original answer presumed)...
Check whether user has a Chrome extension installed
I am in the process of building a Chrome extension, and for the whole thing to work the way I would like it to, I need an external JavaScript script to be able to detect if a user has my extension installed.
...
How to leave a message for a github.com user
...mits. Ensure this is the case by clicking on the "View comparison..." link and make sure the user is listed as one of the committers.
Clone on your local machine the repository they pushed to: git clone https://github.com/..../repository.git
Checkout the branch they pushed to: git checkout [branch]...
What is the difference between Left, Right, Outer and Inner Joins?
...
Simple Example: Lets say you have a Students table, and a Lockers table. In SQL, the first table you specify in a join, Students, is the LEFT table, and the second one, Lockers, is the RIGHT table.
Each student can be assigned to a locker, so there is a LockerNumber column in...
How do I diff the same file between two different commits on the same branch?
......]
For instance, to see the difference for a file "main.c" between now and two commits back, here are three equivalent commands:
$ git diff HEAD^^ HEAD main.c
$ git diff HEAD^^..HEAD -- main.c
$ git diff HEAD~2 HEAD -- main.c
...
Converting BigDecimal to Integer
...ge = new BigDecimal("10000000000000000000000000000000000000000000000")
String decimalAsBigIntString = decimal.toBigInteger().toString()
String hugeDecimalAsBigIntString = hugeDecimal.toBigInteger().toString()
String reallyHugeAsBigIntString = reallyHuge.toBigInteger().toString()
exp...
Can I set subject/content of email using mailto:?
...s, you can add line breaks by adding the following encoded sequence in the string:
%0D%0A // one line break
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原子vector的一种实现源码(atomic-vector) - C/C++ - 清泛网 - 专注C/C++及内核技术
...ATOMIC_VECTOR_H
#include <atomic>
#include <memory>
//#include "folly/String.h"
//#include "trace.h"
#define FTRACE(...) do { } while (0)
#define TRACE_SET_MOD(name)
namespace HPHP {
/*
* AtomicVector is a simple vector intended for use by many concurrent readers
* and writers....
How exactly does CMake work?
... a Visual Studio solution.
CMakeCache.txt - This is a persistent key/value string storage which is used to cache value between runs. Values stored in here can be paths to library dependencies or whether an optional component is to be built at all. The list of variables is mostly identical to the one...