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扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...馈 我要反馈 var _hmt = _hmt || []; (function() { var hm = document.createElement("script"); hm.src = "https://hm.baidu.com/hm.js?8d287b854d737bdc880e8ddeac1b309d"; var s = document.getElementsByTagName("script")[0]; s.parentNode.insertB...
How can I find the length of a number?
...
Ok, so many answers, but this is a pure math one, just for the fun or for remembering that Math is Important:
var len = Math.ceil(Math.log(num + 1) / Math.LN10);
This actually gives the "length" of the number even if it's in exponential form. num is supposed to be a non negative integ...
How do I alias commands in git?
...ff
ll = log --pretty=format:"%C(yellow)%h%Cred%d\\ %Creset%s%Cblue\\ [%cn]" --decorate --numstat
ld = log --pretty=format:"%C(yellow)%h\\ %C(green)%ad%Cred%d\\ %Creset%s%Cblue\\ [%cn]" --decorate --date=short --graph
ls = log --pretty=format:"%C(green)%h\\ %C(yellow)[%ad]%Cred%d\\ %Crese...
Increasing the maximum number of TCP/IP connections in Linux
...k
;;
'Linux')
AWK=/bin/awk
;;
'AIX')
AWK=/usr/bin/awk
;;
esac
netstat -an | $AWK -v start=1 -v end=65535 ' $NF ~ /TIME_WAIT|ESTABLISHED/ && $4 !~ /127\.0\.0\.1/ {
if ($1 ~ /\./)
{sip=$1}
else {sip=$4}
...
Android: Difference between Parcelable and Serializable?
...n let’s take an example of how to
convert a JSON to object and back
fun toObject(stringValue: String): Field {
return JSON.parse(Field.serializer(), stringValue)
}
fun toJson(field: Field): String {
//Notice we call a serializer method which is autogenerated from our ...
Alarm 闹钟扩展 · App Inventor 2 中文网
...
Alarm 闹钟扩展
下载
.aix拓展文件：
de.ullisroboterseite.ursai2alarm.aix
.aia示例文件：
UrsAlarmTest.aia
版本历史
版本
修改内容
1.0 (2021-04-26)
初...
How to run functions in parallel?
...both to finish at critical synchronization points using Process.join like @aix's answer mentions.
This is better than time.sleep(10) because you can't guarantee exact timings. With explicitly waiting, you're saying that the functions must be done executing that step before moving to the next, inst...
How to make a copy of a file in android?
...
Kotlin extension for it
fun File.copyTo(file: File) {
inputStream().use { input ->
file.outputStream().use { output ->
input.copyTo(output)
}
}
}
...
What is the list of supported languages/locales on Android?
...ali]
bn_BD [Bengali (Bangladesh)]
bn_IN [Bengali (India)]
bo_ [Tibetan]
bo_CN [Tibetan (China)]
bo_IN [Tibetan (India)]
br_ [Breton]
br_FR [Breton (France)]
brx_ [Bodo]
brx_IN [Bodo (India)]
bs_ [Bosnian]
bs_ [Bosnian (Cyrillic)]
bs_BA [Bosnian (Cyrillic,Bosnia and Herzegovina)]
bs_ [Bosnian (Latin)...
用户界面（UI）组件 · App Inventor 2 中文网
...
日期选择框（DatePicker）
图像（Image）
TaifunImage 拓展：图像高级处理
SimpleBase64 拓展：图像Base64编解码
标签（Label）
列表选择器（ListPicker）
列表显示框（ListView）
对话框（Notifier）
密码...