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How to test if a string is JSON or not?
...SON, it's valid to do so. But they are not structured data. JSON is mainly invented as an interchange format » which is used for structured data » which can be an object or array.
– Onur Yıldırım
Apr 22 '19 at 23:29
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Sleep in JavaScript - delay between actions
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I missed this answer while looking for a solution and re-invented the bicycle :D If only I'd see it before it would save me hours!! Upvoted!
– sserzant
Jan 23 at 12:12
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Origin is not allowed by Access-Control-Allow-Origin
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If this was a good solution, CORS would not have been invented in the first place. Applying this header to any host disable the CORS protection and exposes you to malicious scripts, not just yours. Don't be surprised if your bank account is suddenly empty.
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CSS scrollbar style cross browser [duplicate]
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Scrollbar CSS styles are an oddity invented by Microsoft developers. They are not part of the W3C standard for CSS and therefore most browsers just ignore them.
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jQuery: How can i create a simple overlay?
...gin. Other people have already written some nice ones in jquery, so why re-invent the wheel?
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Calculating a directory's size using Python?
Before I re-invent this particular wheel, has anybody got a nice routine for calculating the size of a directory using Python? It would be very nice if the routine would format the size nicely in Mb/Gb etc.
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Arduino101（Genuino 101）&App Inventor – RGB LED控制 - 创客硬件开...
繁体中文原文：https://blog.cavedu.com/2017/02/ ... %e6%8e%a7%e5%88%b6/
本文將介紹如何取得觸碰點的 RGB 參數之後透過 BLE 送給 Arduino 101 來點亮 RGB LED。
App InventorDesigner使用 Canvas 來取得觸碰點座標。兩個連線斷線用的按鈕：Btn_Connect /&n...
一分钟读懂低功耗蓝牙(BLE) MTU交换数据包 - 创客硬件开发 - 清泛IT社区，...
1.概述
* MTU: 最大传输单元（MAXIMUM TRANSMISSION UNIT） ， 指在一个PDU （Protocol Data Unit： 协议数据单元，在一个传输单元中的有效传输数据）能够传输的最大数据量（多少字节可以一次性传输到对方）。
* MTU 交...
Difference between id and name attributes in HTML
...ny documents already out here without unique name= names, so the W3 people invented the id tag that was required to be unique. Unfortunately older browsers did not understand it. So you need both naming schemes in your forms.
NOTE: attribute "name" for some tags like <a> is not supported in H...
What is the C# equivalent of friend? [duplicate]
...C#, what can we do? The only decent solution that has occurred to me is to invent an interface, IWidget, which only exposes the public methods, and have the Factory return IWidget interfaces.
This involves a fair amount of tedium - exposing all the naturally public properties again in the interface...