I am based in Singapore, have Javascript, React, ReasonMl, ReasonReact projects you'd like to discuss?
Recently I was working on some reasonml/ReasonReact project which required to request data in JSON format from an API endpoint, well there are some BuckleScript decoders such https://github.com/glennsl/bs-json which is the more popular one,the way you decode is pretty easy:
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point = { x: int, y: int }; let point = json => Json.Decode.{ x: json |> field("x", int), y: json |> field("y", int) }; |
you pass in the json and define the field in Json.Decode… at first it […]
fast piping allow you to transform your function code into more readable syntax, imaging you have human(person(age())) this is very inconvenience to see. with piping you can do it like this:
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age ->person ->human |
which is exactly the same as human(person(age())) there are 3 different pipes as I understand you can do like
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age |> person |> human |
or
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human @@ age->person |
whats different […]
Recently I converted one of my old React project while studying React from Udacity sometime back, Since I am reading ReasonML recently so I thought I might as well convert to ReasonML language or ReasonReact, you can find it here. MyRead ReasonReact
Imaging if you need to access deep level of property and you are not sure that if such properties exists deep down, you are doing something like
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books && books.book && books.book.authors && books.book.authors.author |
This is really difficult to read and understand sometime. there is something called optional chaining in javascript proposal which you can use if you include in babel-plugin-proposal-optional-chaining […]
Reason 101: variable assignment with let keyword cannot is immutable, but you can set it to mutable by assign to ref() example JS:
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let count = 0; count ++; |
in reason:
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/* let count = 0; this is immutable */ let count = ref(count); count := count ^ + 1; |
for string concat:
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let stringConcat = “some string” ++ variable ++ “another string“; |
array in ReasonML is using [|”a”, “b”, “c”|] /* | = pipe symbol */
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let test = [| “a”, “b”, “c” |]; |
and
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list = [ “a”, “b”, “c” ]; |
list is immutable. in list you can […]
When you start to work with lots of React components, and you realised alot of component patterns are the same, then you want to reuse these component patterns which is where Higher Order Component(HOC) kicks in. Think of HOC as higher order function: usually you write function in Javascript:
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const thisFunction = function(a, b) { return a + b; } thisFunction(1, 2); // return 3; |
Higher order function basically is […]
Recently Facebook has released the react 16.3 which bundled with a few awesome features including Context API and createRef(), I will talk abit about Context API since its quite hot topic. Context API its a feature that allows you to pass your data down to all child levels without passing props around like what you […]
Lambda was a great service with great features, and serverless framework is even better, serverless simplified everything you do with AWS or other serverless providers. Was doing some fun with serverless framework where I am simply trying to output a response from some API to Lambda API gateway, and suddenly I got “Internal server error” […]
Recently I was graduated from react nanodegree with Udacity. The course was separated into 3 main course: 1) React Fundamentals 2) React & Redux 3) React Native Each course have their own assignment to complete, overall its about 4 or 5 months course, it only took me 1 month plus to complete 😉 since the […]
IntersectionObserver is a very simple and powerful browser API, it really good to build such as lazy-load images, contents or whatever, the concept is really simple, it observer an element, when is visible and then you do something about it. One example, when this div is visible then load image. Outthought its not supported by […]