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Creating NSData from NSString in Swift
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361
In Swift 3
let data = string.data(using: .utf8)
In Swift 2 (or if you already have a NSSt...
App Inventor 2 手机蓝牙及语音控制 - App Inventor 2 中文网 - 清泛IT论坛，有思想、有深度
来源：http://www.zsqz.com/chuangke/13.htm【学习目标】
1.掌握蓝牙客户端或服务端组件的使用；
2.学会编写手机蓝牙APP，并向Arduino发送控制指令；
3.学会编写手机语音控制程序，并能通过语音控制Arduino等设备。 【...
扒了一下源码，ESP8285接入App Inventor有4种玩法，第3种最香 - AI 助手 - ...
...个芯片怎么接入App Inventor 2？我翻了MIT的源码和我们fun123的30多个扩展，把所有可行路径都摸了一遍。先说结论：不用开发新扩展，现有组件就能用。
ESP8285是什么？和ESP8266啥关系？
ESP8285是乐鑫(Espressif)出的WiFi芯片，本质上...
Converting from a string to boolean in Python?
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ASP.NET MVC 5 - Identity. How to get current ApplicationUser
...a context for starters, but going forward the user database tables change (3 times in the past 2 years) but the API is consistent. For example the users table is now called AspNetUsers in Identity Framework, and the names of several primary key fields kept changing, so the code in several answers wi...
How to find index of all occurrences of element in array?
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edited Sep 10 at 12:36
answered Dec 27 '13 at 9:59
nn...
Convert Int to String in Swift
... // Successfully converted String to Int
}
Or if you're using Swift 2 or 3:
let x: Int? = Int(myString)
share
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Insert, on duplicate update in PostgreSQL?
... the_table (id, column_1, column_2)
VALUES (1, 'A', 'X'), (2, 'B', 'Y'), (3, 'C', 'Z')
ON CONFLICT (id) DO UPDATE
SET column_1 = excluded.column_1,
column_2 = excluded.column_2;
Searching postgresql's email group archives for "upsert" leads to finding an example of doing what you poss...
How to find the size of localStorage
...= ((localStorage[x].length * 2 + x.length * 2)/1024); log.push(x.substr(0,30) + " = " + xLen.toFixed(2) + " KB"); total+= xLen}; if (total > 1024){log.unshift("Total = " + (total/1024).toFixed(2)+ " MB");}else{log.unshift("Total = " + total.toFixed(2)+ " KB");}; alert(log.join("\n"));
P.S. Sn...
Cannot deserialize the JSON array (e.g. [1,2,3]) into type ' ' because type requires JSON object (e.
... me. thanks
– garish
Aug 10 '17 at 13:49
1
If you wanted to keep it as a single object instead of...