大约有 40,000 项符合查询结果(耗时:0.0376秒) [XML]

https://stackoverflow.com/ques... 

How can I represent an 'Enum' in Python?

...y3, e.g. you'll need __order__ in python 2). To use enum34, do $ pip install enum34 To use aenum, do $ pip install aenum Installing enum (no numbers) will install a completely different and incompatible version. from enum import Enum # for enum34, or the stdlib version # from aenum import...
https://stackoverflow.com/ques... 

Accessing private member variables from prototype-defined functions

... No, there's no way to do it. That would essentially be scoping in reverse. Methods defined inside the constructor have access to private variables because all functions have access to the scope in which they were defined. Methods defined on a prototype are not defin...
https://stackoverflow.com/ques... 

How to calculate a time difference in C++

...turns the CPU time consumed by the program. So if the program is run in parallel the time returned by the function would be the accumulated of the time spent on all CPUs, rather than the time elapsed cplusplus.com/reference/ctime/clock – Ameer Jewdaki Aug 3 '1...
https://stackoverflow.com/ques... 

How to drop all tables in a SQL Server database?

...y tables. I found that code that works and does everything you try (delete all tables from your database): DECLARE @Sql NVARCHAR(500) DECLARE @Cursor CURSOR SET @Cursor = CURSOR FAST_FORWARD FOR SELECT DISTINCT sql = 'ALTER TABLE [' + tc2.TABLE_SCHEMA + '].[' + tc2.TABLE_NAME + '] DROP [' + rc1.C...
https://stackoverflow.com/ques... 

Why should eval be avoided in Bash, and what should I use instead?

...rintln. We could, of course, just redirect the output of println on each call, but for the sake of example, we're not going to do that. We'll need to use eval, since variables can't be used to redirect output. function println { eval printf "$2\n" "${@:3}" $1 } function error { println '...
https://stackoverflow.com/ques... 

Ways to implement data versioning in MongoDB

... approach would be to store diffs. Because the display of these diffs is really a special action, I would put the diffs in a different "history" collection. I would use the different collection to save memory space. You generally don't want a full history for a simple query. So by keeping the histo...
https://stackoverflow.com/ques... 

How should the ViewModel close the form?

... window). You're welcome to make other tradeoffs, but it seems like a generally good deal to me. – Joe White May 6 '12 at 18:54  |  show 24 mo...
https://stackoverflow.com/ques... 

Will the Garbage Collector call IDisposable.Dispose for me?

...lizer, and implement IDisposable, that your finalizer needs to explicitly call Dispose. This is logical, and is what I've always done in the rare situations where a finalizer is warranted. ...
https://stackoverflow.com/ques... 

Positioning MKMapView to show multiple annotations at once

...tations I want to add to my MKMapView (it could 0-n items, where n is generally around 5). I can add the annotations fine, but I want to resize the map to fit all annotations onscreen at once, and I'm not sure how to do this. ...
https://stackoverflow.com/ques... 

How to Load an Assembly to AppDomain with all references recursively?

...e I wrote to solve this problem: github.com/jduv/AppDomainToolkit. Specifically, look at the LoadAssemblyWithReferences method in this class: github.com/jduv/AppDomainToolkit/blob/master/AppDomainToolkit/… – Jduv Mar 14 '13 at 14:44 ...