大约有 5,213 项符合查询结果（耗时：0.0470秒） [XML]
Create singleton using GCD's dispatch_once in Objective-C
...
This is a perfectly acceptable and thread-safe way to create an instance of your class. It may not technically be a "singleton" (in that there can only ever be 1 of these objects), but as long as you only use the [Foo sharedF...
How do I find an element that contains specific text in Selenium Webdriver (Python)?
I'm trying to test a complicated javascript interface with Selenium (using the Python interface, and across multiple browsers). I have a number of buttons of the form:
...
How to center a button within a div?
I have a div that's width is 100%.
14 Answers
14
...
Combining C++ and C - how does #ifdef __cplusplus work?
I'm working on a project that has a lot of legacy C code. We've started writing in C++, with the intent to eventually convert the legacy code, as well. I'm a little confused about how the C and C++ interact. I understand that by wrapping the C code with extern "C" the C++ compiler will no...
Visual Studio loading symbols
I'm working on a ColdFusion project for a while now, and Visual Studio started to behave strange for me at least.
16 Answ...
Intellij reformat on file save
I remember seeing in either IntelliJ or Eclipse the setting to reformat (cleanup) files whenever they are saved. How do I find it (didn't find it in the settings)
...
How to clear the interpreter console?
Like most Python developers, I typically keep a console window open with the Python interpreter running to test commands, dir() stuff, help() stuff , etc.
...
hasNext in Python iterators?
Haven't Python iterators got a hasNext method?
13 Answers
13
...
How to redirect 404 errors to a page in ExpressJS?
I don't know a function for doing this, does anyone know of one?
22 Answers
22
...
What are the most common non-BMP Unicode characters in actual use? [closed]
In your experience which Unicode characters, codepoints, ranges outside the BMP (Basic Multilingual Plane) are the most common so far? These are the ones which require 4 bytes in UTF-8 or surrogates in UTF-16.
...