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String concatenation in Ruby
...ficient in term of memory/speed from what I've seen (not measured though). All three methods will throw an uninitialized constant error when ROOT_DIR is nil.
When dealing with pathnames, you may want to use File.join to avoid messing up with pathname separator.
In the end, it is a matter of taste....
如何获取控件的值？ - C++ UI - 清泛IT社区，为创新赋能！
...给控件。
void AFXAPI DDX_Text( CDataExchange* pDX, int nIDC, BYTE& value );
void AFXAPI DDX_Text( CDataExchange* pDX, int nIDC, short& value );
void AFXAPI DDX_Text( CDataExchange* pDX, int nIDC, int& value );
void AFXAPI DDX_Text( CDataExchange* pDX, int nIDC, UINT& value ...
What is the documents directory (NSDocumentDirectory)?
...ath = paths.firstObject;
return basePath;
}
This Documents directory allows you to store files and subdirectories your app creates or may need.
To access files in the Library directory of your apps sandbox use (in place of paths above):
[NSSearchPathForDirectoriesInDomains(NSLibraryDirectory...
What is the opposite of 'parse'? [closed]
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In compiler terminology, the opposite is "unparse". Specifically, parsing turns a stream of tokens into abstract syntax trees, while unparsing turns abstract syntax trees into a stream of tokens.
share
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How to format code in Xcode? [duplicate]
...ant to format and then press Ctrl+I.
Use Cmd+A first if you wish to format all text in the selected file.
Note: this procedure only re-indents the lines, it does not do any advanced formatting.
In XCode 12 beta:
The new key binding to re-indent is Option+I.
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自定义下载器扩展：个性化下载进度展示 - App Inventor 2 拓展 - 清泛IT社...
... notification message for download complete notification.
Get a list of all download IDs
Get the ASD path of your app
Get the current download ID.
Cancel all ongoing downloads.
This block converts the bytes into KB and MB automatically, You can use own calculation for converting bytes...
Find and replace Android studio
Is there a way to find and replace all occurrences of a word in an entire project( not just a single class using refactor -> rename) and also maintain case, either in android studio or using a command line script?
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How to check for changes on remote (origin) Git repository?
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git remote update && git status
Found this on the answer to Check if pull needed in Git
git remote update to bring your remote refs up to date. Then you can
do one of several things, such as:
git status -uno will tell ...
How to write a Python module/package?
I've been making Python scripts for simple tasks at work and never really bothered packaging them for others to use. Now I have been assigned to make a Python wrapper for a REST API. I have absolutely no idea on how to start and I need help.
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How do I profile memory usage in Python?
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This one has been answered already here: Python memory profiler
Basically you do something like that (cited from Guppy-PE):
>>> from guppy import hpy; h=hpy()
>>> h.heap()
Partition of a set of 48477 objects. Total size = 3265516 bytes.
Index Count % Size % Cumulat...