大约有 15,400 项符合查询结果（耗时：0.0305秒） [XML]
What is the use of ObservableCollection in .net?
...ect sender, NotifyCollectionChangedEventArgs e)
{
foreach (var x in e.NewItems)
{
// do something
}
foreach (var y in e.OldItems)
{
//do something
}
if (e.Action == NotifyCollectionChangedAction.Move)
{
...
What is the most frequent concurrency issue you've encountered in Java? [closed]
This is a poll of sorts about common concurrency problems in Java. An example might be the classic deadlock or race condition or perhaps EDT threading bugs in Swing. I'm interested both in a breadth of possible issues but also in what issues are most common. So, please leave one specific answer o...
How do I split a string with multiple separators in javascript?
...
Pass in a regexp as the parameter:
js> "Hello awesome, world!".split(/[\s,]+/)
Hello,awesome,world!
Edited to add:
You can get the last element by selecting the length of the array minus 1:
>>> bits = "Hello awesome, world...
How to configure postgresql for the first time?
I have just installed postgresql and I specified password x during installation.
When I try to do createdb and specify any password I get the message:
...
What is the difference between tree depth and height?
...
is that means height == max depth
– roottraveller
Jun 22 '16 at 7:05
6
...
How to jump to a specific character in vim?
How can I jump to the next character X in vim?
4 Answers
4
...
Unit testing with Spring Security
...een evaluating Spring MVC to determine if we should use it in one of our next projects. So far I love what I've seen, and right now I'm taking a look at the Spring Security module to determine if it's something we can/should use.
...
Using Regex to generate Strings rather than match them
...erformance testing. It would be really cool to be able to specify a regex for Strings so that my generator spits out things which match this. Is there something out there already baked which I can use to do this? Or is there a library which gets me most of the way there?
...
Difference between an API and SDK
I am trying to explain to a non-developer the difference between an API an SDK. I need to explain why a commercial fingerprint software vendor will likely not provide an SDK, although they may certainly have used one.
...
Check if database exists in PostgreSQL using shell
...out whether it is possible to use shell to check if a PostgreSQL database exists?
12 Answers
...