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Better explanation of when to use Imports/Depends
...n, however, be thwarted if another package, loaded later, places an identically named function earlier on the search path. Chambers (in SoDA) uses the example of the function "gam", which is found in both the gam and mgcv packages. If two other packages were loaded, one of them depending on gam and...
How does “304 Not Modified” work exactly?
...ating a date-modified or ETag for each version of each resource; this typically comes from the filesystem or a separate database column.
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How to open a file for both reading and writing?
...Note that the documentation for a states 'on some Unix systems, means that all writes append to the end of the file regardless of the current seek position'. In this case the f.seek(0) won't work as expected. I just fell foul of this on Linux.
– Graeme
Jun 25 '...
UIView's frame, bounds, center, origin, when to use what?
...ew has the properties frame , bounds , center , and origin , and they all seem to be interrelated. Most of the time, I deal with frame when setting the position and size of a UIView . I understand that frame is using global coordinate system and bounds is using coordinate of the local ...
Why does the order of the loops affect performance when iterating over a 2D array?
... x[1][0] etc...
Meaning that you're hitting them all in order. Now look at the 1st version. You're doing:
x[0][0]
x[1][0]
x[2][0]
x[0][1]
...
Split string based on a regular expression
...y in this case.
>>> str1.split()
['a', 'b', 'c', 'd']
If you really wanted regex you can use this ('\s' represents whitespace and it's clearer):
>>> re.split("\s+", str1)
['a', 'b', 'c', 'd']
or you can find all non-whitespace characters
>>> re.findall(r'\S+',str1)
...
Force add despite the .gitignore file
...
See man git-add:
-f, --force
Allow adding otherwise ignored files.
So run this
git add --force my/ignore/file.foo
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Conditional Variable vs Semaphore
... that a piece of code is atomic, put a lock around it. You could theoretically use a binary semaphore to do this, but that's a special case.
Semaphores and condition variables build on top of the mutual exclusion provide by locks and are used for providing synchronized access to shared resources. ...
项目管理实践【四】Bug跟踪管理【Bug Trace and Management】 - 项目管理 -...
...版本下载：http://downloads.sourceforge.net/bugnet/BugNET-0.7.921-Install.zip
源代码下载：http://downloads.sourceforge.net/bugnet/BugNET-0.7.921-Source.zip
英文文档：http://bugnetproject.com/Documentation/tabid/57/topic/Installation/Default.aspx
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Invoking a static method using reflection
...the method is private use getDeclaredMethod() instead of getMethod(). And call setAccessible(true) on the method object.
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