大约有 32,000 项符合查询结果(耗时:0.0163秒) [XML]

https://stackoverflow.com/ques... 

How to modify a global variable within a function in bash?

...alise that if you just run the function without assigning it to a variable all the global variables within it will update. Instead of returning a string array, why not just update the string array in the function then assign it to another variable after the function has finished ? ...
https://stackoverflow.com/ques... 

String concatenation vs. string substitution in Python

...catenation is (significantly) faster according to my machine. But stylistically, I'm willing to pay the price of substitution if performance is not critical. Well, and if I need formatting, there's no need to even ask the question... there's no option but to use interpolation/templating. >>&g...
https://stackoverflow.com/ques... 

Solving “The ObjectContext instance has been disposed and can no longer be used for operations that

...creates proxy class for your entity and overrides navigation properties to allow lazy-loading. E.g. if you have this entity: public class MemberLoan { public string LoandProviderCode { get; set; } public virtual Membership Membership { get; set; } } Entity Framework will return proxy inheri...
https://stackoverflow.com/ques... 

How to dynamically compose an OR query filter in Django?

...o: list = [1, 2, 3] # it gets a bit more complicated if we want to dynamically build # OR queries with dynamic/unknown db field keys, let's say with a list # of db fields that can change like the following # list_with_strings = ['dbfield1', 'dbfield2', 'dbfield3'] # init our q objects variable to ...
https://stackoverflow.com/ques... 

What does the Q_OBJECT macro do? Why do all Qt objects need this macro?

I just started using Qt and noticed that all the example class definitions have the macro Q_OBJECT as the first line. What is the purpose of this preprocessor macro? ...
https://stackoverflow.com/ques... 

How to implement a queue with three stacks?

...r Sedgewick have confirmed they are not aware of a 3-stack solution within all the constraints of the original question DETAILS There are two implementations behind this link: http://www.eecs.usma.edu/webs/people/okasaki/jfp95/index.html One of them is O(1) with three stacks BUT it uses lazy exe...
https://stackoverflow.com/ques... 

How to avoid type safety warnings with Hibernate HQL results?

...way to do it, though it does involve a bit of finger typing each time you call q.list(). There are two other techniques I'd suggest: Write a cast-helper Simply refactor all your @SuppressWarnings into one place: List<Cat> cats = MyHibernateUtils.listAndCast(q); ... public static <T&gt...
https://stackoverflow.com/ques... 

Angularjs $q.all

I have implemented the $q.all in angularjs, but I can not make the code work. Here is my code : 3 Answers ...
https://stackoverflow.com/ques... 

How to exit a 'git status' list in a terminal?

..._PAGER enviroment variable, then PAGER environment variable, then less as fallback. – Jakub Narębski Nov 8 '09 at 14:49 2 ...
https://stackoverflow.com/ques... 

Batch File; List files in directory, only filenames?

...s is probably a very simple question, but I'm having trouble with it. Basically, I am trying to write a Batch File and I need it to list all the files in a certain directory. The dir command will do this, but it also gives a bunch of other information; I want it to list ONLY the file names and e...