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!['use strict';
var Http = require("http");
var Http$1 = /* module */[];
Http.createServer((function (_, res) {
return res.end("Hello Bali");
})).listen(3333);
exports.Http = Http$1;](https://image.slidesharecdn.com/reasonmlv2-190914132734/85/Perkenalan-ReasonML-38-320.jpg)
![Syntax 101
let two = 1 + 1;
print_int(42);
print_endline("Hello Bali");
let float_addition = 1.1 +. 2.2;
Js.log(2 > 3);
Js.log(2 > 3.1);
Js.log(float_of_int(2) > 3.1);
print_endline("Hello" ++ "Bali");
let age = 32;
let age: int = 32;
let colors = ["red", "green", "blue"];](https://image.slidesharecdn.com/reasonmlv2-190914132734/85/Perkenalan-ReasonML-47-320.jpg)
![package.json
{
"name": "reason-demo-1",
"version": "0.1.0",
"scripts": {
"build": "bsb -make-world",
"start": "bsb -make-world -w",
"clean": "bsb -clean-world"
},
"keywords": [
"BuckleScript"
],
"author": "",
"license": "MIT",
"devDependencies": {
"bs-platform": "^4.0.6"
}
}](https://image.slidesharecdn.com/reasonmlv2-190914132734/85/Perkenalan-ReasonML-50-320.jpg)
![bsconfig.json{
"name": "reason-demo-1",
"version": "0.1.0",
"sources": {
"dir" : "src",
"subdirs" : true
},
"package-specs": {
"module": "commonjs",
"in-source": true
},
"suffix": ".bs.js",
"bs-dependencies": [
// add your dependencies here.
],
"warnings": {
"error" : "+101"
},
"namespace": true,
"refmt": 3
}](https://image.slidesharecdn.com/reasonmlv2-190914132734/85/Perkenalan-ReasonML-51-320.jpg)
![Binding and Interop
[%bs.raw {|
console.log("here is some js for you!")
|}];
Js.log("this is reason");
let x = [%bs.raw {| 'here is a string from javascript' |}];
Js.log(x ++ " back in reason land");
[@bs.val] external pi: float = "Math.PI";
let volume_cylinder = (diameter, height) => pi *. diameter *. height;](https://image.slidesharecdn.com/reasonmlv2-190914132734/85/Perkenalan-ReasonML-57-320.jpg)
Uploaded byRiza Fahmi
Perkenalan ReasonML
The document discusses ReasonML, a syntax and toolchain for OCaml that enhances code readability and interoperability with JavaScript, highlighting its static type system and type inference. It outlines the features like modernization of syntax, performance improvements, ease of adoption, and the robust toolchain that supports React applications. Additionally, it provides examples of using ReasonML in practice and includes a recap of its advantages over traditional JavaScript coding.
More Related Content
Perkenalan ReasonML
- 1.
- 2. NEW SYNTAX &TOOLCHAIN FOR OCAML
- 3. LOOKS AND FEELSLIKE
- 4. (* ocaml *) letx y = y + 2 type 'a mytype type listOfString = string list let run () = let nothing = None in let something = Some 10 in Js.log3 "a" 2 something; let count = match nothing with | None !=> "10" | Some _ !=> "20" in if x 2 = 4 then Js.log "Good" else Js.log "panic!" . !/* old reason !*/ let x y !=> y + 2; type mytype 'a; type listOfString = list string; let run () !=> { let nothing = None; let something = Some 10; Js.log3 "a" 2 something; let count = switch nothing { | None !=> "10" | Some _ !=> "20" }; if (x 2 !== 4) { Js.log "Good" } else { Js.log "panic!" } }; !/* new reason !*/ let x(y) !=> y + 2; type mytype('a); type listOfString = list(string); let run () !=> { let nothing = None(); let something = Some(10); Js.log3("a", 2, something); let count = switch nothing { | None !=> "10" | Some _ !=> "20" }; if (x(2) !== 4) { Js.log("Good"); } else { Js.log("panic!"); } };
- 5.
- 7. FULL REBUILD IS2S, INCREMENTAL BUILD IS <100MS ON AVERAGE. USED TO RECEIVE BUGS REPORTS ON A DAILY BASIS; THERE HAVE BEEN A TOTAL OF 10 BUGS DURING THE WHOLE YEAR! REFACTORING SPEED WENT FROM DAYS TO DOZENS OF MINUTES. Messenger.com
- 8.
- 9.
- 10. STABLE, MATURE, 20YEARS OLD
- 11. STATIC TYPES ANDTYPE INFERENCE
- 12. BUCKLESCRIPT BRINGS OCAML TOTHE WEB
- 16.
- 17.
- 18.
- 19. TYPE INFERENCE ISEVEN MORE COOLER!
- 20.
- 21. VARIANT AND PATTERNMATCHING
- 22. CAN TARGET JSAND NATIVE
- 23. HUMAN READABLE ERRORMESSAGE
- 26.
- 27.
- 28. EASE OF ADOPTIONAND EASE OF MAINTENANCE
- 29.
- 30.
- 31. “THE COMMUNITY ISSMALL BUT VERY FOCUSED ON DELIVERING A BETTER EXPERIENCE FOR DEVELOPERS.” Wojciech Bilicki
- 32.
- 33. BRINGS OCAML TOTHE WEB
- 34.
- 35.
- 36.
- 37.
- 38. 'use strict'; var Http= require("http"); var Http$1 = /* module */[]; Http.createServer((function (_, res) { return res.end("Hello Bali"); })).listen(3333); exports.Http = Http$1;
- 39. 'use strict'; function add(a,b) { return a + b | 0; } exports.add = add;
- 40.
- 41.
- 43.
- 44. MODERN SYNTAX ANDTOOLCHAIN FOR OCAML STATIC TYPE AND TYPE INFERENCE CAN TARGET AND INTEROP WITH JS COMPILE TO NATIVE AND BYTECODE FAST, READABLE OUTPUT, READABLE ERROR MESSAGE
- 45. “TALK IS CHEAP.SHOW ME CODE.” Linus Torvalds
- 46. Install and Setups $yarn global add bs-platform $ yarn global add reason-cli $ rtop
- 47. Syntax 101 let two= 1 + 1; print_int(42); print_endline("Hello Bali"); let float_addition = 1.1 +. 2.2; Js.log(2 > 3); Js.log(2 > 3.1); Js.log(float_of_int(2) > 3.1); print_endline("Hello" ++ "Bali"); let age = 32; let age: int = 32; let colors = ["red", "green", "blue"];
- 48. Records 101 type person= { age: int, name: string, }; type nonPerson = { age: int, name: string, species: string, }; let kuririn: person = {age: 31, name: "Kuririn"}; let chiChi = {age: 21, name: "Chi-chi"}; let piccolo = {age: 103, name: "Piccolo", species: “Namek”}; print_endline(piccolo.species);
- 49. Reason Project $ bsb-init reason-demo -theme basic-reason $ cd reason-demo . !"" README.md !"" bsconfig.json !"" node_modules # %"" bs-platform !"" package.json %"" src %"" Demo.re
- 50. package.json { "name": "reason-demo-1", "version": "0.1.0", "scripts":{ "build": "bsb -make-world", "start": "bsb -make-world -w", "clean": "bsb -clean-world" }, "keywords": [ "BuckleScript" ], "author": "", "license": "MIT", "devDependencies": { "bs-platform": "^4.0.6" } }
- 51. bsconfig.json{ "name": "reason-demo-1", "version": "0.1.0", "sources":{ "dir" : "src", "subdirs" : true }, "package-specs": { "module": "commonjs", "in-source": true }, "suffix": ".bs.js", "bs-dependencies": [ // add your dependencies here. ], "warnings": { "error" : "+101" }, "namespace": true, "refmt": 3 }
- 52.
- 53. $ node src/Demo.bs.js Hello,BuckleScript and Reason! Try it out! $ yarn start . %"" src !"" Demo.bs.js %"" Demo.re
- 54. Variants 101 type species= | Saiyan | Namekian | Human | Majin | Other; type characters = { age: int, name: string, species, }; let bejita = {age: 42, name: "Vegeta", species: Saiyan};
- 55. Pattern Matching 101 letreply = switch (message) { | "Reason's pretty cool" => "Yep" | "good night" => "See ya!" | “hello" | “hi" | “heya" | "hey" => "hello to you too!" | _ => "Nice to meet you!" };
- 56. Pattern Matching andVariant let hear = switch (bejita.species) { | Saiyan => "This is too easy for me!!" | Namekian => “…” | Other => “Let’s try one more time" };
- 57. Binding and Interop [%bs.raw{| console.log("here is some js for you!") |}]; Js.log("this is reason"); let x = [%bs.raw {| 'here is a string from javascript' |}]; Js.log(x ++ " back in reason land"); [@bs.val] external pi: float = "Math.PI"; let volume_cylinder = (diameter, height) => pi *. diameter *. height;
- 58.
- 59. FAMILIAR SYNTAX TYPE ANDTYPE INFERENCE VARIANTS PATTERN MATCHING BINDING AND INTEROP
- 60.
- 61.
- 62. NPM/Yarn React Router Flow Pre;er EsLint JSConsole PropTypes Redux
- 63. NPM/Yarn React Router Flow Pre;er EsLint JSConsole NPM/Yarn Reason Router StaGc Typing Refmt Rtop PropTypes PropTypes Redux Redux
- 64. NPM/Yarn Deps Deps Deps Deps Included in Browser NPM/Yarn Included Language feature Included Includedin Toolchain Deps Language feature Deps Included
- 65.
- 66. Props {this.props.someProp} <Example someProp=“Hello!” /> letmake(~someProp, _children) { …component, render /* etc */ } <Example someProp=“Hello!” />
- 67.
- 68. type state ={count: int}; /* the actions */ type action = | Increment | Decrement; let component = ReasonReact.reducerComponent("Counter"); let make = (_children) => { ...component, /* the state */ initialState: () => {count: 0}, /* the reducer */ reducer: (action, state) => switch action { | Increment => ReasonReact.Update({count: state.count + 1}) | Decrement => ReasonReact.Update({count: state.count - 1}) }, render: ({ state, send }) => <div> <h1> {ReasonReact.string(string_of_int(state.count))} </h1> <button onClick=((_e) => send(Increment))> {ReasonReact.string(“+”)} </button> <button onClick=((_e) => send(Decrement))> {ReasonReact.string(“-“)} </button> </div> };
- 69. type state ={count: int};
- 70. /* the actions*/ type action = | Increment | Decrement;
- 71. let component =ReasonReact.reducerComponent("Counter");
- 72. let make =(_children) => { ...component, /* the state */ initialState: () => {count: 0}, /* … */ };
- 73. /* the reducer*/ reducer: (action, state) => switch action { | Increment => ReasonReact.Update({count: state.count + 1}) | Decrement => ReasonReact.Update({count: state.count - 1}) },
- 74. render: ({ state,send }) => <div> <h1> {ReasonReact.string(string_of_int(state.count))} </h1> <button onClick=((_e) => send(Increment))> {ReasonReact.string(“+”)} </button> <button onClick=((_e) => send(Decrement))> {ReasonReact.string(“-“)} </button> </div>
- 75.
- 76. “At the languagelevel, it has features that we’v previously had to Bolt on top of the JavaScript such as alloca+on-less named arguments, prop types and more. In short, it is the best way to take React to the next level — unlocking far beGer user experience and fast-loading applica+ons.” Jordan Walke Creator React and Reason
- 77. JavaScript and HTML— I can build things! React — I can reuse my things! ReasonReact — I can reuse my React things more safely! All FuncGonal Programming
- 78.
- 81.