大约有 40,000 项符合查询结果(耗时:0.0424秒) [XML]

https://stackoverflow.com/ques... 

android pick images from gallery

...ut it in and see if it works for you. EDIT: This brings up the Documents app. To allow the user to also use any gallery apps they might have installed: Intent getIntent = new Intent(Intent.ACTION_GET_CONTENT); getIntent.setType("image/*"); Intent pickIntent = new Intent(Intent.ACTION...
https://stackoverflow.com/ques... 

Javascript regex returning true.. then false.. then true.. etc [duplicate]

... /^[^-_]([a-z0-9-_]{4,20})[^-_]$/gi; You're using a g (global) RegExp. In JavaScript, global regexen have state: you call them (with exec, test etc.) the first time, you get the first match in a given string. Call them again and ...
https://stackoverflow.com/ques... 

What does 'super' do in Python?

... What's the difference? SomeBaseClass.__init__(self) means to call SomeBaseClass's __init__. while super(Child, self).__init__() means to call a bound __init__ from the parent class that follows Child in the instance's Method Resolution Order (MRO). If th...
https://stackoverflow.com/ques... 

Difference between exit() and sys.exit() in Python

...raising SystemExit. sys.exit does so in sysmodule.c: static PyObject * sys_exit(PyObject *self, PyObject *args) { PyObject *exit_code = 0; if (!PyArg_UnpackTuple(args, "exit", 0, 1, &exit_code)) return NULL; /* Raise SystemExit so callers may catch it or clean up. */ PyE...
https://stackoverflow.com/ques... 

How to clear the interpreter console?

...s file in your python search path: # wiper.py class Wipe(object): def __repr__(self): return '\n'*1000 wipe = Wipe() Then you can do this from the interpreter all you like :) >>> from wiper import wipe >>> wipe >>> wipe >>> wipe ...
https://stackoverflow.com/ques... 

Add custom messages in assert?

... or with a macro: #ifndef m_assert #define m_assert(expr, msg) assert((msg, expr)) #endif – Szymon Marczak Aug 3 '17 at 10:50 ...
https://stackoverflow.com/ques... 

Is there a simple, elegant way to define singletons? [duplicate]

...se the Instance method. Here's an example: @Singleton class Foo: def __init__(self): print 'Foo created' f = Foo() # Error, this isn't how you get the instance of a singleton f = Foo.instance() # Good. Being explicit is in line with the Python Zen g = Foo.instance() # Returns already ...
https://stackoverflow.com/ques... 

Convert SVG to image (JPEG, PNG, etc.) in the browser

... svgopen.org/2010/papers/62-From_SVG_to_Canvas_and_Back - Works perfectly! [On the link page, sourceSVG = $("#your_svg_elem_name").get(0) ] – Vijay Singh Apr 24 '16 at 17:40 ...
https://stackoverflow.com/ques... 

Thread vs ThreadPool

...l functions under the hood Creating a new thread yourself would be more appropriate if the job were going to be relatively long running (probably around a second or two, but it depends on the specific situation) @Krzysztof - Thread Pool threads are background threads that will stop when the main...
https://stackoverflow.com/ques... 

PHP Get name of current directory

... getcwd(); or dirname(__FILE__); or (PHP5) basename(__DIR__) http://php.net/manual/en/function.getcwd.php http://php.net/manual/en/function.dirname.php You can use basename() to get the trailing part of the path :) In your case, I'd say y...