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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
...lows everyone, especially novices, to start programming and building fully functional apps for Android devices. Compared to traditional text programming with Android Studio, it has limited features. We enabled App Inventor with multi-touch gestures detection, such as two-finger rotation, and user-de...
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 ...
What's the difference between Jetty and Netty?
...overlap increases as both projects add new features.
Here is a benchmark: https://gist.github.com/dhanji/81ccc0e6652eccaf43cf
Jetty is a web server (HTTP), similar to the likes of Tomcat and such, but lighter than most servlet containers. This is closer to the traditional Java way of doing server ...
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)
}
}
}
...
NPM - How to fix “No readme data”
...vate": true in your package.json, then npm will refuse to publish it. ref: https://www.npmjs.org/doc/files/package.json.html
– AlexStack
Nov 5 '14 at 12:51
3
...
python-pandas and databases like mysql
...()
And here is the equivalent example for MySQLdb:
import MySQLdb
mysql_cn= MySQLdb.connect(host='myhost',
port=3306,user='myusername', passwd='mypassword',
db='information_schema')
df_mysql = pd.read_sql('select * from VIEWS;', con=mysql_cn)
print 'loaded da...
What is the advantage of using Restangular over ngResource?
...README with the differences against $resource. You can check them out here https://github.com/mgonto/restangular/blob/master/README.md#differences-with-resource
Anyway, as a sum up, besides the additional features and the promise based approach, the idea is that Restangular can also handle all of y...
What is the difference between “int” and “uint” / “long” and “ulong”?
...three and briefly looked at 6502 shudder
A brief google search shows this:
https://www.tutorialspoint.com/cprogramming/c_data_types.htm
This is also good info:
https://docs.oracle.com/cd/E19620-01/805-3024/lp64-1/index.html
use int if you really don't care how large your bits are; it can change.
Use...
Difference between matches() and find() in Java Regex
...eUploader: {
brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...
RegEx to parse or validate Base64 data
...
The best regexp which I could find up till now is in here
https://www.npmjs.com/package/base64-regex
which is in the current version looks like:
module.exports = function (opts) {
opts = opts || {};
var regex = '(?:[A-Za-z0-9+\/]{4}\\n?)*(?:[A-Za-z0-9+\/]{2}==|[A-Za-z0-9+\/]{3...