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Is “IF” expensive?
...omething typically called the instruction pointer (IP) or program counter (PC); these terms are synonymous, but different terms are used with different architectures. For most instructions, the PC of the next instruction is just the current PC plus the length of the current instruction. For most R...
石头剪刀布 · App Inventor 2 中文网
...家，反过来克制。
界面已经在模板工程里搭好了，组件名如下，后面写代码要用到：
组件名
类型
作用
按钮_石头 按钮_剪刀 按钮_布
按钮
玩家出招
标签_玩家分 标签_...
App Inventor 2 百度网盘拓展：授权、文件列表、下载、上传 · App Inventor 2 中文网
... .aix 拓展下载：
cn.fun123.BaiduPan.aix - v1.0
拓展组件名：BaiduPan，类名 cn.fun123.BaiduPan.BaiduPan。
想了解用 Web客户端 自己拼接口的原理，请看：App Inventor 2 接入百度网盘API
使用前准备
在 百度网盘开放...
App Inventor 2 Canvas绘图教程 - 游戏精灵与动画实现 · App Inventor 2 中文网
... {
画布1.DrawLine(prevX, prevY, currentX, currentY)
}
事件参数名必须与组件定义逐字一致（startX、prevX…）。写成自己起的名字，
块里读到的就是没赋值的变量。
绘制圆形
when 画布1.Touched(x, y, touchedAnySprite) {
画...
How to make the hardware beep sound in Mac OS X 10.6
...unctionality you're thinking of is an artifact of very old (pre-1990s) IBM PC-compatible hardware. Before most computers had sound cards, most machines had a small speaker or piezo buzzer connected to one of the channels of a timer chip. This could be used to generate simple tones or beeps. Even aft...
What is the advantage of GCC's __builtin_expect in if else statements?
...0 00 00 callq b <main+0xb>
7: R_X86_64_PC32 time-0x4
b: 48 85 c0 test %rax,%rax
e: 75 0a jne 1a <main+0x1a>
10: bf 00 00 00 00 mov $0x0,%edi
11: R_X86_64_3...
“Unresolved inclusion” error with Eclipse CDT for C standard library headers
...at seems to work for me.
include paths for c:
D:\dev\cygwin\lib\gcc\i686-pc-cygwin\3.4.4\include
D:\dev\cygwin\usr\include
include paths for c++:
D:\dev\cygwin\lib\gcc\i686-pc-cygwin\3.4.4\include
D:\dev\cygwin\lib\gcc\i686-pc-cygwin\3.4.4\include\c++
D:\dev\cygwin\usr\include
this gets me a ...
What is the list of possible values for navigator.platform as of today? [closed]
...imulator shipped with Xcode
Macintosh
MacIntel: Intel processor (2005)
MacPPC: PowerPC processor
Mac68K: 68000 processor
Pike v7.6 release 92: Opera Mini 5 on any iPhone (2009)
Pike v7.8 release 517: Opera Mini 7 on any iPhone (2012)
BlackBerry
BlackBerry (2003)
FreeBSD
FreeBSD
FreeBSD i386: x86...
What are “connecting characters” in Java identifiers?
...s used to connect words.
http://www.fileformat.info/info/unicode/category/Pc/list.htm
U+005F _ LOW LINE
U+203F ‿ UNDERTIE
U+2040 ⁀ CHARACTER TIE
U+2054 ⁔ INVERTED UNDERTIE
U+FE33 ︳ PRESENTATION FORM FOR VERTICAL LOW LINE
U+FE34 ︴ PRESENTATION FORM FOR VERTICAL WAVY LOW LINE
U+FE4D ﹍ DA...
多媒体组件 · App Inventor 2 中文网
...录制视频的组件。录制视频后，手机上包含剪辑的文件的名称可作为参数提供给 录制完成 事件。
例如，可以使用文件名来设置源 视频播放器 组件的属性。
属性
无
事件
录制完成(clip)
...