大约有 44,000 项符合查询结果(耗时:0.0549秒) [XML]

https://stackoverflow.com/ques... 

Can I use __init__.py to define global variables?

...e: >>> from mypackage import mymodule my constant is 42 Still, if you do have constants, it would be reasonable (best practices, probably) to put them in a separate module (constants.py, config.py, ...) and then if you want them in the package namespace, import them. mypackage/__init__....
https://stackoverflow.com/ques... 

in_array multiple values

... to the targets: $haystack = array(...); $target = array('foo', 'bar'); if(count(array_intersect($haystack, $target)) == count($target)){ // all of $target is in $haystack } Note that you only need to verify the size of the resulting intersection is the same size as the array of target valu...
https://stackoverflow.com/ques... 

Is it good practice to use the xor operator for boolean checks? [closed]

...What @RobertGrant said). Most humans would understand the first one easier if they know what xor is (which is pretty useful to know if you're in the field of computing...) – Harold R. Eason Nov 22 '13 at 20:53 ...
https://stackoverflow.com/ques... 

__FILE__ macro shows full path

... If your platform supports it char* fileName = basename(__FILE__); It's definitely there in Linux and OS X, don't know about Windows though. – JeremyP Jul 17 '13 at 12:47 ...
https://stackoverflow.com/ques... 

Something like 'contains any' for Java set?

... Collections.disjoint(A, B) work? From the documentation: Returns true if the two specified collections have no elements in common. Thus, the method returns false if the collections contains any common elements. share ...
https://stackoverflow.com/ques... 

What's wrong with this 1988 C code?

...When the preprocessor expands them, your code will look roughly like: if (c == ' ' || c == '\n' || c == '\t') state = 0;; /* <--PROBLEM #1 */ else if (state == 0;) { /* <--PROBLEM #2 */ state = 1;; That second semicolon causes the else to have no previous if as a mat...
https://stackoverflow.com/ques... 

How to easily resize/optimize an image size with iOS?

...the iPhone is PNG, because it has optimizations for that format. However, if you want to store these images as JPEGs, you can take your UIImage and do the following: NSData *dataForJPEGFile = UIImageJPEGRepresentation(theImage, 0.6); This creates an NSData instance containing the raw bytes for a...
https://stackoverflow.com/ques... 

Get the data received in a Flask request

...l not be uploaded. request.values: combined args and form, preferring args if keys overlap request.json: parsed JSON data. The request must have the application/json content type, or use request.get_json(force=True) to ignore the content type. All of these are MultiDict instances (except for json)...
https://stackoverflow.com/ques... 

How can I get a list of all classes within current module in Python?

...): for name, obj in inspect.getmembers(sys.modules[__name__]): if inspect.isclass(obj): print(obj) And even better: clsmembers = inspect.getmembers(sys.modules[__name__], inspect.isclass) Because inspect.getmembers() takes a predicate. ...
https://stackoverflow.com/ques... 

Automatic HTTPS connection/redirect with node.js/express

...{ res.redirect('https://' + req.headers.host + req.url); // Or, if you don't want to automatically detect the domain name from the request header, you can hard code it: // res.redirect('https://example.com' + req.url); }) // have it listen on 8080 http.listen(8080); The https expres...