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Rolling or sliding window iterator?
I need a rolling window (aka sliding window) iterable over a sequence/iterator/generator. Default Python iteration can be considered a special case, where the window length is 1. I'm currently using the following code. Does anyone have a more Pythonic, less verbose, or more efficient method for d...
In log4j, does checking isDebugEnabled before logging improve performance?
...there to prevent potentially expensive computation of the log message when it involves invocation of the toString() methods of various objects and concatenating the results.
In the given example, the log message is a constant string, so letting the logger discard it is just as efficient as checking...
How to ignore SVN folders in WinMerge?
...| Filters... | Filefilters, create a new filter or modify an existing one.
It will look like this:
## Ignore Java class and jar files
f: \.class$
f: \.jar$
## Ignore subversion housekeeping directories
d: \\.svn$
d: \\._svn$
Save it, then when selecting items to merge, select the filter you define...
How to override a JavaScript function
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edited Mar 23 '11 at 18:29
answered Mar 23 '11 at 17:50
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overlay two images in android to set an imageview
... to overlay two images in my app, but they seem to crash at my canvas.setBitmap() line. What am I doing wrong?
5 Answers
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Is “inline” without “static” or “extern” ever useful in C99?
...e.
[update, to elaborate]
I do not think there is any use for "inline" (without "static" or "extern") in a .c file. But in a header file it makes sense, and it requires a corresponding "extern inline" declaration in some .c file to actually generate the stand-alone code.
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Why is reading lines from stdin much slower in C++ than Python?
...sing Python and C++ and was shocked to see my C++ code run an order of magnitude slower than the equivalent Python code. Since my C++ is rusty and I'm not yet an expert Pythonista, please tell me if I'm doing something wrong or if I'm misunderstanding something.
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AtomicInteger lazySet vs. set
...
Cited straight from "JDK-6275329: Add lazySet methods to atomic classes":
As probably the last little JSR166 follow-up for Mustang,
we added a "lazySet" method to the Atomic classes
(AtomicInteger, AtomicReference, etc...
count(*) vs count(column-name) - which is more correct? [duplicate]
Does it make a difference if you do count(*) vs count(column-name) as in these two examples?
5 Answers
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How to prevent ifelse() from turning Date objects into numeric objects
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edited Jun 20 at 9:12
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answered Jun 29 '16 at 7:31
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