大约有 18,000 项符合查询结果（耗时：0.0305秒） [XML]
'dragleave' of parent element fires when dragging over children elements
I have the following HTML structure and I've attached the dragenter and dragleave events to the <div id="dropzone"> element.
...
Is a Java string really immutable?
We all know that String is immutable in Java, but check the following code:
15 Answers
...
What is the difference between cout, cerr, clog of iostream header in c++? When to use which one?
I tried researching the difference between cout , cerr and clog on the internet but couldn't find a perfect answer. I still am not clear on when to use which. Can anyone explain to me, through simple programs and illustrate a perfect situation on when to use which one?
...
.NET - Dictionary locking vs. ConcurrentDictionary
I couldn't find enough information on ConcurrentDictionary types, so I thought I'd ask about it here.
8 Answers
...
SQL update fields of one table from fields of another one
I have two tables:
7 Answers
7
...
What is the easiest/best/most correct way to iterate through the characters of a string in Java?
StringTokenizer ? Convert the String to a char[] and iterate over that? Something else?
15 Answers
...
How do I make an asynchronous GET request in PHP?
I wish to make a simple GET request to another script on a different server. How do I do this?
22 Answers
...
Remove Identity from a column in a table
We have a 5GB table (nearly 500 million rows) and we want to remove the identity property on one of the column, but when we try to do this through SSMS - it times out.
...
Why would you ever implement finalize()?
I've been reading through a lot of the rookie Java questions on finalize() and find it kind of bewildering that no one has really made it plain that finalize() is an unreliable way to clean up resources. I saw someone comment that they use it to clean up Connections, which is really scary since t...
C# Ignore certificate errors?
I am getting the following error during a web service request to a remote web service:
11 Answers
...