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What is the difference between string primitives and String objects in JavaScript?
...ain type categories, primivites and objects.
var s = 'test';
var ss = new String('test');
The single quote/double quote patterns are identical in terms of functionality. That aside, the behaviour you are trying to name is called auto-boxing. So what actually happens is that a primitive is convert...
Why is the default value of the string type null instead of an empty string?
It's quite annoying to test all my strings for null before I can safely apply methods like ToUpper() , StartWith() etc...
...
Difference between session affinity and sticky session?
What is the difference between session affinity and sticky session in context of load balancing servers?
7 Answers
...
Pass a data.frame column name to a function
...
Is there any way to pass the column name not as a string?
– kmm
Apr 14 '10 at 23:13
...
How to set proxy for wget?
...>=127.0.0.01:8080 <download>..., omitting the "use_proxy=yes" command parameter. Thanks!
– alejandrob
Sep 25 '15 at 15:45
...
Convert list to array in Java [duplicate]
...llection to an array: either using
a pre-sized array (like c.toArray(new String[c.size()])) or
using an empty array (like c.toArray(new String[0]). In
older Java versions using pre-sized array was recommended, as the
reflection call which is necessary to create an array of proper size
...
How do you query for “is not null” in Mongo?
...roposition:
db.collection_name.find({"field_name":{$type:2}}) //type:2 == String
You can check on the required attribute's type, it will return all the documents that its field_name queried contains a value because you are checking on the filed's type else if it is null the type condition doesn't...
Can a class member function template be virtual?
...using MinGW G++ 3.4.5 on Window 7:
#include <iostream>
#include <string>
using namespace std;
template <typename T>
class A{
public:
virtual void func1(const T& p)
{
cout<<"A:"<<p<<endl;
}
};
template <typename T>
class B
: public...
PowerShell script to return versions of .NET Framework on a machine?
...le by looking for unique lines that start with ".NET Framework"
Select-String "^.NET" | Select-Object -Unique |
# And flip it so it's key = value
# And convert ".NET FRAMEWORK 4.5.2" to [version]4.5.2
ForEach-Object {
[version]$v, [int]$k = $_ -replace "\.NET Framework " -s...
今年全球重大数据泄露事件盘点 - 资讯 - 清泛网 - 专注C/C++及内核技术
...电子邮件地址、出生日期、邮政编码，以及可用于定位的IP地址，被拿到地下数据市场热卖。
5、婚外情网站Ashley Madison数据泄露，2名用户自杀
号称在全世界拥有3750万注册用户的婚外情网站Ashley Madison，可能是今年数据泄露事...