大约有 42,000 项符合查询结果（耗时：0.0516秒） [XML]
reference assignment is atomic so why is Interlocked.Exchange(ref Object, Object) needed?
...d _allData of my own type SystemData which consists of few List<T> and Dictionary<T> marked as volatile . The system data ( _allData ) is refreshed once in a while and I do it by creating another object called newData and fill it's data structures with new data. When it's done I j...
Is it possible for a computer to “learn” a regular expression by user-provided examples?
...ton, it is possible to learn some regular expressions by a program. Kearns and Valiant show some cases where it is not possible to learn a finite automaton. A related problem is learning hidden Markov Models, which are probabilistic automata that can describe a character sequence. Note that most mod...
HTTP Basic Authentication credentials passed in URL and encryption
I have a question about HTTPS and HTTP Authentication credentials.
3 Answers
3
...
jQuery: what is the best way to restrict “number”-only input for textboxes? (allow decimal points)
...
Update
There is a new and very simple solution for this:
It allows you to use any kind of input filter on a text <input>,
including various numeric filters. This will correctly handle
Copy+Paste, Drag+Drop, keyboard shortcuts, contex...
How to check if hex color is “too black”?
...e darkness of a color chosen by a color picker to see if it's "too black", and if so, set it to white. I thought I could use the first characters of the hex value to pull this off. It's working, but it's switching some legitimately "light" colors too.
...
Mutable vs immutable objects
...returning an array of strings from a method) but I'm having trouble understanding what the negative impacts are of this. What are the best practices around using mutable objects? Should you avoid them whenever possible?
...
What are Transient and Volatile Modifiers?
Can someone explain what the transient and volatile modifiers mean in Java?
4 Answers
...
Most efficient way to check for DBNull and then assign to a variable?
...to avoid. By writing row.IsNull(columnName) you're reading it once already and reading it again. Not saying that will make a difference, but theoretically it can be less efficient..
– nawfal
Feb 6 '13 at 16:31
...
How to make a great R reproducible example
... teaching, sending a bug report or searching for guidance on mailing lists and here on Stack Overflow, a reproducible example is often asked and always helpful.
...
JUnit: how to avoid “no runnable methods” in test utils classes
... I don't think it would help, because he moved to JUnit 4.4 and that should not matter.
– guerda
Mar 23 '09 at 7:46
2
...