大约有 47,000 项符合查询结果（耗时：0.0544秒） [XML]
How to check if APK is signed or “debug build”?
As far as I know, in android "release build" is signed APK. How to check it from code or does Eclipse has some kinda of secret defines?
...
Check if event exists on element [duplicate]
...s in jQuery? I’m working on a plugin that uses custom namespaced events, and would like to be able to check if the event is binded to an element or not.
...
How do I convert from int to Long in Java?
I keep finding both on here and Google people having troubles going from long to int and not the other way around. Yet I'm sure I'm not the only one that has run into this scenario before going from int to Long .
...
What techniques can be used to define a class in JavaScript, and what are their trade-offs?
...at least a couple of ways to go about doing that. What would be the syntax and why would it be done in that way?
19 Answers...
How should one use std::optional?
I'm reading the documentation of std::experimental::optional and I have a good idea about what it does, but I don't understand when I should use it or how I should use it. The site doesn't contain any examples as of yet which leaves it harder for me to grasp the true concept of this object. When...
Syntax for creating a two-dimensional array
...ry the following:
int[][] multi = new int[5][10];
... which is a short hand for something like this:
int[][] multi = new int[5][];
multi[0] = new int[10];
multi[1] = new int[10];
multi[2] = new int[10];
multi[3] = new int[10];
multi[4] = new int[10];
Note that every element will be initialized...
How to make an app's background image repeat
I have set a background image in my app, but the background image is small and I want it to be repeated and fill in the whole screen. What should I do?
...
Is cout synchronized/thread-safe?
...ate locking. However, do things like cout get special treatment in the standard library?
4 Answers
...
Viewing all defined variables [duplicate]
... been defined up to a point (so I know which names I've used, their values and such).
10 Answers
...
How to get a random value from dictionary in python
How can I get a random pair from a dict ? I'm making a game where you need to guess a capital of a country and I need questions to appear randomly.
...