大约有 44,000 项符合查询结果(耗时:0.0790秒) [XML]

https://stackoverflow.com/ques... 

How to position a DIV in a specific coordinates?

I want to position a DIV in a specific coordinates ? How can I do that using Javascript ? 6 Answers ...
https://stackoverflow.com/ques... 

What is the use of the square brackets [] in sql statements?

... The brackets are required if you use keywords or special chars in the column names or identifiers. You could name a column [First Name] (with a space)--but then you'd need to use brackets every time you referred to that column. The newer tools add th...
https://stackoverflow.com/ques... 

Changing one character in a string

... Don't modify strings. Work with them as lists; turn them into strings only when needed. >>> s = list("Hello zorld") >>> s ['H', 'e', 'l', 'l', 'o', ' ', 'z', 'o', 'r', 'l', 'd'] >>> s[6] = 'W' >>>...
https://stackoverflow.com/ques... 

Find and extract a number from a string

...tring b = string.Empty; int val; for (int i=0; i< a.Length; i++) { if (Char.IsDigit(a[i])) b += a[i]; } if (b.Length>0) val = int.Parse(b); share | improve this answer ...
https://stackoverflow.com/ques... 

Pointer arithmetic for void pointer in C

... ..) is incremented, its value is increased by the size of that data type. If a void pointer which points to data of size x is incremented, how does it get to point x bytes ahead? How does the compiler know to add x to value of the pointer? ...
https://stackoverflow.com/ques... 

ContextLoaderListener or not?

...'s no reason to keep the ContextLoaderListener and applicationContext.xml. If your app works fine with just the servlet's context, that stick with that, it's simpler. Yes, the generally-encouraged pattern is to keep non-web stuff in the webapp-level context, but it's nothing more than a weak conven...
https://stackoverflow.com/ques... 

Proper way to use AJAX Post in jquery to pass model from strongly typed MVC3 view

I'm a novice web programmer so please forgive me if some of my "jargon" is not correct. I've got a project using ASP.NET using the MVC3 framework. ...
https://stackoverflow.com/ques... 

How can I output the value of an enum class in C++11

...will work for any scoped enum. The solution employs SFINAE via std::enable_if and is as follows. #include <iostream> #include <type_traits> // Scoped enum enum class Color { Red, Green, Blue }; // Unscoped enum enum Orientation { Horizontal, Vertical }; // Another...
https://stackoverflow.com/ques... 

Why does Java switch on contiguous ints appear to run faster with added cases?

...ch table is transformed into what looks like a lookupswitch (similar to an if/else if structure). Decompiling the assembly generated by the JIT (hotspot JDK 1.7) shows that it uses a succession of if/else if when there are 17 cases or less, an array of pointers when there are more than 18 (more eff...
https://stackoverflow.com/ques... 

What is the difference between a User Control Library and a Custom Control Library?

...but more limited than a full custom control. These controls have a small difference from a runtime point of view. When building an application and placing an UserControl into it, the control tree will have a concrete UserControl template inside of it. So if we consider a lame example of a specializ...