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GestureDetector 手势检测拓展：识别向上/向下/向右/向左滑动和双击等手势...
...mmunity.kodular.io/t/f ... d-doubleclick/94542
已整理：https://www.fun123.cn/reference/ ... /gesturedetect.htmlhttps://www.fun123.cn/reference/other/extensionsMultitouch.html
https://www.fun123.cn/reference/other/extensionsRotation.html
待一起分析、整理。
App Inventor 2 MultiImagePicker 拓展：实现图片/视频多选功能 - App Inve...
...大选择数量
- 可过滤文件类型
官方文档：https://www.fun123.cn/reference/extensions/MultiImagePicker.html
二、属性
MimeFilter（图片过滤类型）
- 默认值：image/*
- 单选和多选都会使用这个过滤条件
- 如果想选择视频，可以改为 video/...
Convert String to SecureString
...
"The combination is 12345... that's the kind of thing an idiot has on his luggage!"
– Kolob Canyon
Sep 27 '17 at 23:47
...
Facebook Post Link Image
...wered Feb 20 '14 at 11:48
Gaurav123Gaurav123
4,18566 gold badges4040 silver badges7070 bronze badges
...
HTML.ActionLink vs Url.Action in ASP.NET Razor
...
@Html.ActionLink("link text", "someaction", "somecontroller", new { id = "123" }, null)
generates:
<a href="/somecontroller/someaction/123">link text</a>
and Url.Action("someaction", "somecontroller", new { id = "123" }) generates:
/somecontroller/someaction/123
There is also Ht...
7个App Inventor 2文件操作实用技巧，读写文件从未如此顺手 - App应用开发 ...
...录剩余空间——FileTools 拓展就是你的瑞士军刀。
从 fun123.cn 下载 com.sunny.FileTools.aix 拓展文件，导入后即可使用。几个特别实用的方法：
• GetFreeSpace：查询目录可用空间（字节），存大文件前先判一判，防写入失败
• AsyncCo...
How to get the nth occurrence in a string?
...
const string = "XYZ 123 ABC 456 ABC 789 ABC";
function getPosition(string, subString, index) {
return string.split(subString, index).join(subString).length;
}
console.log(
getPosition(string, 'ABC', 2) // --> 16
)
...
File system that uses tags rather than folders?
...c genre=indie-rock good year=1999
$ tmsu tag melody.mp3 music
$ tmsu tag DC123.jpg photo landscape country=italy year=2014
$ tmsu files music year = 1999
./song.mp3
And the virtual filesystem:
$ mkdir mp
$ tmsu mount mp
$ ls mp
query tags
$ ls tags
country genre good landscape photo music ...
SQL update fields of one table from fields of another one
...('a.' || quote_ident(column_name), ',') || ')
FROM a
WHERE b.id = 123
AND a.id = b.id'
FROM information_schema.columns
WHERE table_name = 'a' -- table name, case sensitive
AND table_schema = 'public' -- schema name, case sensitive
AND column_name <> 'id' -...
Safe integer parsing in Ruby
I have a string, say '123' , and I want to convert it to the integer 123 .
8 Answers
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