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Python matplotlib multiple bars
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Diptangsu Goswami
3,64822 gold badges1818 silver badges2929 bronze badges
answered Jan 11 '13 at 2:12
HYRYHYRY
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How do you calculate log base 2 in Java for integers?
...teger.numberOfLeadingZeros() (20-30%) and almost 10 times faster (jdk 1.6 x64) than a Math.log() based implementation like this one:
private static final double log2div = 1.000000000001 / Math.log( 2 );
public static int log2fp0( int bits )
{
if( bits == 0 )
return 0; // or throw except...
How to upgrade Git on Windows to the latest version?
...installer from https://git-scm.com/download (check whether you want 32- or 64-bit) and run it to upgrade.
If you already have the latest version it does nothing, in which case you can manually run the installer to reinstall.
C:\> git update-git-for-windows
Git for Windows 2.17.0.windows.1 (64bi...
iOS 7 status bar back to iOS 6 default style in iPhone app?
...roller will alter the height of its UINavigationBar to either 44 points or 64 points, depending on a rather strange and undocumented set of constraints. If the UINavigationController detects that the top of its view’s frame is visually contiguous with its UIWindow’s top, then it draws its naviga...
Python: Convert timedelta to int in a dataframe
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abeboparebopabeboparebop
4,73644 gold badges2727 silver badges3838 bronze badges
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VC DDE（Dynamic Data Exchange）与EXCEL连接 - C/C++ - 清泛网 - 专注C/C++及内核技术
...可能实现项目这个需求。
DDE，中文名叫动态数据交换，是基于WINDOWS系统开发的一种消息传输的通信方案。花了半天时间研究了下，做了个案例，VC6.0下调试通过，很开心。作为一个产品经理，为产品设计搭建好平台，有人的平...
MediaHelper 媒体助手扩展：从媒体文件提取元数据和专辑封面 · App Inventor 2 中文网
...r 媒体助手扩展
介绍
此扩展是对 Android MediaMetadataRetriever 类的包装，能够从媒体文件中提取元数据，包括来自本地物理文件和流媒体文件（如 https://...mp3）。
主要功能
从本地...
Why does typeof NaN return 'number'?
...9: Number value
primitive value corresponding to a double-precision 64-bit binary format IEEE 754 value.
ECMA 262 5e Section 4.3.23: NaN
Number value that is a IEEE 754 "Not-a-Number" value.
IEEE 754 on Wikipedia
The IEEE Standard for Floating-Point Arithmetic is a ...
TortoiseSVN icons not showing up under Windows 7
...and then back on, and the Tortise overlay icons reappeared. I'm using the 64-bit version of both Win7 and TortiseSVN.
– Chris Staley
Aug 30 '09 at 1:20
96
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Realistic usage of the C99 'restrict' keyword?
... *b
add R2 += R1
set R2 → *b
Does GCC really do it?
GCC 4.8 Linux x86-64:
gcc -g -std=c99 -O0 -c main.c
objdump -S main.o
With -O0, they are the same.
With -O3:
void f(int *a, int *b, int *x) {
*a += *x;
0: 8b 02 mov (%rdx),%eax
2: 01 07 add ...