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App Inventor 2 数学代码块 · App Inventor 2 中文网
...用此块生成可重复的随机数序列。你可以通过使用相同值调用随机集种子来生成相同的随机数序列，这对于测试涉及随机值的程序很有用。
在科学技术和机器学习等其他算法相关任务中，我们经常需要用到随机数，为了把握...
Which is fastest? SELECT SQL_CALC_FOUND_ROWS FROM `table`, or SELECT COUNT(*)
...nished my check on INNODB from 10 checks I can tell that it's 26(2query) against 9.2(1 query) SELECT SQL_CALC_FOUND_ROWS tblA.*, tblB.id AS 'b_id', tblB.city AS 'b_city', tblC.id AS 'c_id', tblC.type AS 'c_type', tblD.id AS 'd_id', tblD.extype AS 'd_extype',...
List Git aliases
...to yield lines starting with alias in case some configurations somehow contains keyword alias: git config --list | grep -E '^alias'
– MasterMind
Feb 2 '18 at 10:19
add a comme...
How can I get the external SD card path for Android 4.0+?
...unt")
.redirectErrorStream(true).start();
process.waitFor();
final InputStream is = process.getInputStream();
final byte[] buffer = new byte[1024];
while (is.read(buffer) != -1) {
s = s + new String(buffer);
}
is.close();
...
When to use thread pool in C#? [closed]
...onsiderations, I use thread pools for database access, physics/simulation, AI(games), and for scripted tasks ran on virtual machines that process lots of user defined tasks.
Normally a pool consists of 2 threads per processor (so likely 4 nowadays), however you can set up the amount of threads you ...
How to decide font color in white or black depending on background color?
...present a value in hexadecimal (base-16) notation. I won't get into the details of the conversion here, they're easy to look up.
Once you have the intensities for the individual colors, you can determine the overall intensity of the color and choose the corresponding text.
if (red*0.299 + green*0....
TaifunWiFi 拓展：WiFi Manager WiFi管理器扩展 · App Inventor 2 中文网
... 各版本对比 App上架指南 入门必读 IoT专题 AI2拓展 Aia Store 关于 关于我们 发布日志 服务条款 搜索 ...
How do you implement a good profanity filter?
...t, search queries, and situations where the input text can potentially contain profanity or undesirable language. Oftentimes this needs to be filtered out.
...
程序员才能听得懂的笑话 - 轻松一刻 - 清泛网 - 专注C/C++及内核技术
...的电灯泡类必然封装了换灯泡的方法，所以你要做的就是调用“换电灯泡”方法。
5、一个微软工程师正走在路上，突然听到一只青蛙说：“如果你吻我一下的话，我就会变成漂亮的女人，我们可以结婚，从此幸福地生活在一...
Why should weights of Neural Networks be initialized to random numbers? [closed]
I am trying to build a neural network from scratch.
Across all AI literature there is a consensus that weights should be initialized to random numbers in order for the network to converge faster.
...