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Replace duplicate spaces with a single space in T-SQL
...
This would work:
declare @test varchar(100)
set @test = 'this is a test'
while charindex(' ',@test ) > 0
begin
set @test = replace(@test, ' ', ' ')
end
select @test
...
Best way to use Google's hosted jQuery, but fall back to my hosted library on Google fail
...it'll have to time out first before failing. This may take a while. In my test of disconnecting my computer from the network it just tried and tried and tried and didn't timeout. 2) if (!jQuery) will throw an error because jQuery is not defined so Javascript doesn't know what to do with it.
...
MySQL vs MongoDB 1000 reads
I have been very excited about MongoDb and have been testing it lately. I had a table called posts in MySQL with about 20 million records indexed only on a field called 'id'.
...
Why don't they teach these things in school? [closed]
...ve to gather: how much does version control help? How does it help? Unit testing? We can reason about the effectiveness of various techniques, but actually proving that effectiveness conclusively would be very expensive. We'd need to run a complete, realistic software project from beginning to e...
Initialize a nested struct
...ort string
}
func main() {
c := &Configuration{
Val: "test",
Proxy: Proxy{
Address: "addr",
Port: "port",
},
}
fmt.Println(c)
fmt.Println(c.Proxy.Address)
}
The less proper and ugly way but still works:
c := &Configur...
C语言结构体里的成员数组和指针 - c++1y / stl - 清泛IT社区，为创新赋能！
...中的成员的地址是什么？我们先简单化一下代码：struct test{
int i;
char *p;
};复制代码
上面代码中，test结构中i和p指针，在C的编译器中保存的是相对地址——也就是说，他们的地址是相对于struct test的实例的。...
Get class name using jQuery
...ment has multiple class it is not trivial to check.
Example:
<div id='test' class='main divhover'></div>
Where:
$('#test').attr('class'); // returns `main divhover`.
With .hasClass() we can test if the div has the class divhover.
$('#test').hasClass('divhover'); // returns...
Is double square brackets [[ ]] preferable over single square brackets [ ] in Bash?
..., I heard ksh supports it too). For example, you can do
[[ -e $b ]]
to test whether a file exists. But with [, you have to quote $b, because it splits the argument and expands things like "a*" (where [[ takes it literally). That has also to do with how [ can be an external program and receives i...
How does inline Javascript (in HTML) work?
...
The best way to answer your question is to see it in action.
<a id="test" onclick="alert('test')"> test </a>
In the js
var test = document.getElementById('test');
console.log( test.onclick );
As you see in the console, if you're using chrome it prints an anonymous function...
Java Reflection Performance
...alled frequently in performance-sensitive applications.
Here's a simple test I hacked up in 5 minutes on my machine, running Sun JRE 6u10:
public class Main {
public static void main(String[] args) throws Exception
{
doRegular();
doReflection();
}
public static ...