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What are the Ruby Gotchas a newbie should be warned about? [closed]
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Wikipedia Ruby gotchas
From the article:
Names which begin with a capital letter are treated as constants, so local variables should begin with a lowercase letter.
The characters $ and @ do not indicate variable data type as ...
Difference between @import and link in CSS
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The <link> directive can allow for multiple css be loaded and interpreted asyncronously.
the @import directive forces the browser* to wait until the imported script is loaded inline to the parent script before it can be correctly processed by it's engine, since t...
游戏中的算法与计算思维 06：用难度与耗时形成游戏规则 · App Inventor 2 中文网
...读取最终耗时。
两种难度分别完成；等待 7 秒再刷新，显示真实耗时；重复新局不会继承旧步数。
图来自本课最终工程执行积木后的状态，为 HTML 近似预览；不是手机截图。
核心积木与数据流
下面是本...
How to write a scalable Tcp/Ip based server
...design phase of writing a new Windows Service application that accepts TCP/IP connections for long running connections (i.e. this is not like HTTP where there are many short connections, but rather a client connects and stays connected for hours or days or even weeks).
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编程基础与事件状态 02：把分钟变成可以计算的秒数 · App Inventor 2 中文网
...倒计时。
分别输入 abc、0、181、1.5、2；前四个拒绝，2 显示 120 秒。
图来自本课最终工程执行积木后的状态，为 HTML 近似预览；不是手机截图。
核心积木与数据流
下面是本课完成工程中的核心代码，包含...
TCP loopback connection vs Unix Domain Socket performance
... the overhead of TCP (congestion control, flow control, stream management (IP packet ordering, retransmission, etc) ). Unix domain sockets do not do any of the above because it was designed from the ground up to be ran locally, meaning no congestion issues, no speed differences between server/client...
App Inventor 2 中文网原创内容 · App Inventor 2 中文网
...展示多屏内容，模拟切换屏幕
【布局】组件过多，屏幕显示不下，没有滚动条？
【布局】组件过多，水平/垂直布局显示不下，需要一个滚动条？
【滚动】标签内容过多，如何做到可上下滑动？
【全屏】App Inventor 2 如何...
LoadRunner中参数化技术详解 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...意】对于参数类型为File/Table的数据文件：
l 在参数数据显示区中，最多只显示前100条数据，之后的不显示，但不影响正常取数据。
l 在记事本中编辑参数数据时，数据文件一定要以一个空行结束，否则，最后一行输入的数据...
ADB Shell Input Events
...t; Developer Options > Check the option POINTER SLOCATION
..
Swipe X1 Y1 X2 Y2 [duration(ms)]:
adb shell input swipe 100 500 100 1450 100
in this example X1=100, Y1=500, X2=100, Y2=1450, Duration = 100ms
..
LongPress X Y:
adb shell input swipe 100 500 100 500 250
...
C/C++中的段错误（Segmentation fault） - C/C++ - 清泛网 - 专注C/C++及内核技术
...看调试信息
$ gdb ./segerr
(gdb) l --用l(list)显示我们的源代码
1 ＃i nclude <stdio.h>
2
3 int
4 main()
5 {
6 int i = 0;
7
8 scanf ("%d", i);
9 printf ("%d\n", i);
10 ...