大约有 40,000 项符合查询结果（耗时：0.0431秒） [XML]
How do I create directory if it doesn't exist to create a file?
I have a piece of code here that breaks if the directory doesn't exist:
6 Answers
6
...
pass **kwargs argument to another function with **kwargs
...e second example you provide 3 arguments: filename, mode and a dictionary (kwargs). But Python expects: 2 formal arguments plus keyword arguments.
By prefixing the dictionary by '**' you unpack the dictionary kwargs to keywords arguments.
A dictionary (type dict) is a single variable containing ke...
javascript i++ vs ++i [duplicate]
...ert(++i); // shows 43
alert(i); // shows 43
The i-- and --i operators works the same way.
share
|
improve this answer
|
follow
|
...
How can I use a DLL file from Python?
...). This has been, by far, the easiest way I've found for doing what you ask.
import ctypes
# Load DLL into memory.
hllDll = ctypes.WinDLL ("c:\\PComm\\ehlapi32.dll")
# Set up prototype and parameters for the desired function call.
# HLLAPI
hllApiProto = ctypes.WINFUNCTYPE (
ctypes.c_int, ...
What is the size of ActionBar in pixels?
I need to know the exact size of ActionBar in pixels so to apply correct background image.
13 Answers
...
What Does Question Mark Mean in Xcode Project Navigator?
...
It's the file untracked by source control.
share
|
improve this answer
|
follow
|
...
Guid is all 0's (zeros)?
I'm testing out some WCF services that send objects with Guids back and forth. In my web app test code, I'm doing the following:
...
How do I install ASP.NET MVC 5 in Visual Studio 2012?
...c enhancements to ASP.NET MVC 5, Web API 2, Scaffolding and Entity Framework to users of Visual Studio 2012 and Visual Studio 2012 Express for Web.
You can download and start using these features now.
The download link is to a Web Platform Installer that will allow you to start a new MVC5 project f...
What do all of Scala's symbolic operators mean?
Scala syntax has a lot of symbols. Since these kinds of names are difficult to find using search engines, a comprehensive list of them would be helpful.
...
Editing dictionary values in a foreach loop
...er" - which invalidates the iterator, and any iterator associated with the keys or values collection.
I do see your point, but at the same time it would be odd if the values collection could change mid-iteration - and for simplicity there's only one version number.
The normal way of fixing this so...