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Logical operators for boolean indexing in Pandas
...]
values = [5, 5]
m = np.logical_and.reduce([op(df[c], v) for op, c, v in zip(ops, cols, values)])
m
# array([False, True, False, True, False])
df[m]
A B C
1 3 7 9
3 4 7 6
1 - I know I'm harping on this point, but please bear with me. This is a very, very common beginner's mistake,...
Objective-C categories in static library
... nothing than an archive of object (.o) files. Think of a TAR archive or a ZIP archive without compression. It's just easier to copy a single .a file around than a whole bunch of .o files (similar to Java, where you pack .class files into a .jar archive for easy distribution).
When linking a binar...
Is it possible to apply CSS to half of a character?
...w on GitHub as a Plugin!
Feel free to fork and improve.
Demo | Download Zip | Half-Style.com (Redirects to GitHub)
Pure CSS for a Single Character
JavaScript used for automation across text or multiple characters
Preserves Text Accessibility for screen readers for the blind or visually
impair...
Programmer Puzzle: Encoding a chess board state throughout a game
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and gzip the result afterwards (if the headers won't increase the result) ;^)
– Toad
Dec 2 '09 at 8:23
...
For-each over an array in JavaScript
... available on an array. Methods of interest might be:
forEach
map
filter
zip
reduce
every
some
The standard way to iterate an array in JavaScript is a vanilla for-loop:
var length = arr.length,
element = null;
for (var i = 0; i < length; i++) {
element = arr[i];
// Do something wit...
Comparison between Corona, Phonegap, Titanium
...mply not very good. They work, but the complete build directory is sort of zipped together in there. That means that minor build flaws like copying the splash screen to three different locations during the build suddenly consumes, as I have a large splash-screen image, about 1 meg of storage in the ...
Logging best practices [closed]
...will notice the file, and then it can take action, e.g. compress it (e.g. 7zip) and email it or otherwise make available.
Many systems these days incorporate automated reporting of failures to a central server (after checking with users, e.g. for privacy reasons).
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Q: What tools to you u...
【内核源码】linux UDP实现 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
【内核源码】linux UDP实现linux-udp创建udp socket在socket()创建的时候，会设置对应协议的操作集。 inet_dgram_ops是系统调用层直接调用的操作。udp_prot是底层协议的处理。可以看到相比TCP，UDP不用accept(),lis 创建udp socket
在socket()创建...
Win32汇编--使用MASM - C/C++ - 清泛网 - 专注C/C++及内核技术
...种高级语言，在C源程序中，不必为堆栈段、数据段和代码段的定义而担心，编译器会把程序中的字符串和语句代码分别放到它们该去的地方，程序开始执行的时候也会自己找到main()函数。而汇编是低级语言，必须为所有的东西...
NumPy array initialization (fill with identical values)
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