大约有 40,000 项符合查询结果(耗时:0.0390秒) [XML]

https://stackoverflow.com/ques... 

How do I grant myself admin access to a local SQL Server instance?

I installed SQL Server 2008 R2 to my local machine. But, I can't create a new database because of rights (or lack of). 6 An...
https://stackoverflow.com/ques... 

Add up a column of numbers at the Unix shell

... . . .| x=$(echo <(cat)); echo $((0+${x// /+}+0)) if you want all bash all the time: – qneill Apr 3 '15 at 23:31 ...
https://stackoverflow.com/ques... 

Remove all special characters with RegExp

I would like a RegExp that will remove all special characters from a string. I am trying something like this but it doesn’t work in IE7, though it works in Firefox. ...
https://stackoverflow.com/ques... 

Iterate a list as pair (current, next) in Python

...(b, None) return itertools.izip(a, b) How this works: First, two parallel iterators, a and b are created (the tee() call), both pointing to the first element of the original iterable. The second iterator, b is moved 1 step forward (the next(b, None)) call). At this point a points to s0 and b...
https://stackoverflow.com/ques... 

Getting multiple keys of specified value of a generic Dictionary?

...e, perhaps maintain two dictionary mapping key->value and value->List_of_keys. If you do the latter you will trade storage for look up speed. It wouldn't take much to turn @Cybis example into such a data structure. s...
https://stackoverflow.com/ques... 

How do I check if a string is valid JSON in Python?

...SON. In general, the "Pythonic" philosophy for this kind of situation is called EAFP, for Easier to Ask for Forgiveness than Permission. share | improve this answer | follow...
https://stackoverflow.com/ques... 

What is the purpose of “return await” in C#?

...n async method behave differently: when combined with using (or, more generally, any return await in a try block). Consider these two versions of a method: Task<SomeResult> DoSomethingAsync() { using (var foo = new Foo()) { return foo.DoAnotherThingAsync(); } } async Tas...
https://stackoverflow.com/ques... 

Saving utf-8 texts in json.dumps as UTF8, not as \u escape sequence

...ure_ascii=False switch to json.dumps(), then encode the value to UTF-8 manually: >>> json_string = json.dumps("ברי צקלה", ensure_ascii=False).encode('utf8') >>> json_string b'"\xd7\x91\xd7\xa8\xd7\x99 \xd7\xa6\xd7\xa7\xd7\x9c\xd7\x94"' >>> print(json_string.decode(...
https://stackoverflow.com/ques... 

Is there a better alternative than this to 'switch on type'?

...Text = "Not sure what is hovered over")); The code for TypeSwitch is actually pretty small and can easily be put into your project. static class TypeSwitch { public class CaseInfo { public bool IsDefault { get; set; } public Type Target { get; set; } public Action<o...
https://stackoverflow.com/ques... 

Error in strings.xml file in Android

... This can cause a problem when you have a lot of strings and use replace all. See my answer. – Dan Bray Oct 23 '18 at 14:08 add a comment  |  ...