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Learn C first before learning Objective-C [closed]
...does typically assume familiarity with C, so starting with The Objective-C 2.0 Programming Language won't be of much benefit to you. I would invest in a copy of Programming in Objective-C by Stephen Kochan (depending on how quickly you want to get underway, you may consider waiting for the second ed...
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();
...
Shortest distance between a point and a line segment
... 2.8284271247461903 (incorrect). distAnother(0., 0., 4., 0., 2., 2.) gives 2.0 (correct). Please be aware of this. I think the code can be improved to have float conversion somewhere.
– Vladimir Obrizan
Feb 3 '13 at 21:20
...
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 ...
Change column type from string to float in Pandas
...d argument:
>>> pd.to_numeric(s, errors='coerce')
0 1.0
1 2.0
2 4.7
3 NaN
4 10.0
dtype: float64
The third option for errors is just to ignore the operation if an invalid value is encountered:
>>> pd.to_numeric(s, errors='ignore')
# the original Series is returne...
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.
...
When to use , tag files, composite components and/or custom components?
I started using JSF 2.0 with Facelets recently and got puzzled by new composite components knowing existing <ui:include> and other templating techniques offered by Facelets 1.x.
...