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Writing great JavaScript
I probably could have named this post something like “Writing clean, validating and portable JavaScriptâ€, but that would be no where near as catchy. The problem with “great†is it means different things to different people. I am going to show you my idea of great which may differ from many developers views, but I hope it helps someone improve their code. So what’s the point in this, why can’t you just carry on writing JavaScript as you have been for a...
JavaScript,Great,Clean,Tips 2012-03-24 05:18:12
Function Pointers in C are Underrated
The function pointer in C is, in my opinion, one of the most ignored gems of the language. It’s the kind of feature you rarely need, and then suddenly, one day, you find yourself in dire need of it, as evidenced by the real-life use-case below. If you don’t know what a function pointer is in the first place, here’s the meat of it: it gives you the ability to pass a function around like a normal variable. If you know Python / Ruby / Lisp, you might know it by the name...
4 ways to obtain access token in OAuth 2.0
OAuth 2.0 is an authorization mechanism, it's ,mainly used for issuing access token. There are 4 ways to obtain access token as per RFC 6749. Authorization code Implicit Password Client credentials The third party application must obtain a client id and client secret from the target service before obtaining access token no matter which method to use. This is to prevent token to be used maliciously. Authorization code With this method, the third party application must first get an authorization...
OAUTH2,ACCESS TOKEN,REFRESH TOKEN 2019-06-29 07:12:03
Method chaining and lazy evaluation in Ruby
Method chaining has been all the rage lately and every database wrapper or aything else that’s uses queries seems to be doing it. But, how does it work? To figure that out, we’ll write a library that can chain method calls to build up a MongoDB query in this article. Let’s get started! Oh, and don’t worry if you haven’t used MongoDB before, I’m just using it as an example to query on. If you’re using this guide to build a querying library...
Ruby,Method chaining,Lazy evaluation,Implementation 2011-11-29 08:51:17
Want to write some code? Get away from your computer!
I’ve recently realised something. The best place to write code isn’t in front of your computer, with your compiler, IDE and tools. The best place to write code is far, far away from any of these tools – somewhere where you can think properly. For a language with which you are fairly familiar, the mechanics of translating the program in your mind to a program that the compiler can compile (or the interpreter can interpret) is fairly easy – it’s coming ...
Using JavaScript to operate clipboard
Browsers allow JavaScript to read and write data on clipboard. Generally script should not modify user's clipboard to avoid impacting user expectation, but there are cases where this can indeed bring convenience to users. For example, for some code snippet, user can copy it to clipboard with one click instead of select and copy manually. There are three options for clipboard operation provided in JavaScript/browser: document.execCommand() Asynchronous Clipboard API copy and paste events This p...
JAVASCRIPT,CLIPBOARD,NAVIGATOR.CLIPBOARD 2021-01-23 23:23:34
How long does the heuristic cache of the browser actually cache?
Heuristic cache Heuristic caching is the default behavior of browser caching (i.e., for responses without Cache-Control), which is not simply "not caching", but implicitly caching based on the so-called "heuristic cache". HTTP is designed to cache as much as possible, so even if Cache-Control is not specified, the response will be stored and reused if certain conditions are met. This is called heuristic caching. HTTP/1.1 200 OK Content-Type: text/html Content-Length: 1024 Date: Tue, 22 Feb 2022 ...
HEURISTIC CACHE,WEB DESIGN 2023-05-26 08:40:13
Does Android team like to eat Kitkat?
Google released the new Android development code for Android 4.4 :KitKat.The new version will bring astonishing user experience for Android users. The interesting thing about the name is that it has the same name as one brand of Nescafe's chocolate wafer. Nescafe has authorized that Google can use this name as their development code. We may guess that the project team or the director was eating Kitkat or like to eat Kitkat while they were brainstorming the new development code, so they came out ...
Android,Kitkat,development code 2013-09-03 23:03:03
A simple example of drawing bar chart with label using d3.js
D3.js is a very popular graph library to help developers draw various kind of charts using JavaScript in a webpage. It utilizes the SVG format supported by all major modern browsers and can help developers get rid of the old age of Flash or server side graph drawing libraries. In this post, we will introduce some simple examples of drawing bar chart with labels using D3.js. First, let's see what will be the final look of the graph drawn. Below is the complete source code for this example....
A Programming Idiom You've Never Heard Of
Here are some sequences of events: Take the rake out of the shed, use it to pile up the leaves in the backyard, then put the rake back in the shed. Fly to Seattle, see the sights, then fly home. Put the key in the door, open it, then take the key out of the door. Wake-up your phone, check the time, then put it back to sleep. See the pattern? You do something, then do something else, then you undo the first thing. Or more accurately, the last step is the inverse of the first. Once you're aware ...
Programming,Idiom,Strange 2012-01-04 08:12:25
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