dcolthorp

/** Used by Flavor to mark a type in a readable way. */
export interface Flavoring<FlavorT> {
  _type?: FlavorT;
}
/** Create a "flavored" version of a type. TypeScript will disallow mixing flavors, but will allow unflavored values of that type to be passed in where a flavored version is expected. This is a less restrictive form of branding. */
export type Flavor<T, FlavorT> = T & Flavoring<FlavorT>;

/** Used by Brand to mark a type in a readable way. */
export interface Branding<BrandT> {
  _type: BrandT;

yelouafi

Algebraic Effects in JavaScript part 4 - Implementing Algebraic Effects and Handlers

This is the final part of a series about Algebraic Effects and Handlers.

• Part 1 : continuations and control transfer
• Part 2 : Capturing continuations with Generators
• Part 3 : Delimited continuations
• Part 4 : Implementing Algebraic Effects and handlers

So we've come to the core topic. The reality is that we've already covered most of it in the previous parts. Especially, in the third part, where we saw delimited continuations at work.

yelouafi

Algebraic Effects in JavaScript part 3 - Delimited Continuations

This is the third part of a series about Algebraic Effects and Handlers.

• Part 1 : continuations and control transfer
• Part 2 : Capturing continuations with Generators
• Part 3 : Delimited continuations
• Part 4 : Algebraic Effects and handlers

In the preceding parts, we introduced the notions of continuations and control transfer. We saw how to capture the current

yelouafi

Algebraic Effects in JavaScript part 2 - Capturing continuations with Generators

This is the second part of a series about Algebraic Effects and Handlers.

• Part 1 : continuations and control transfer
• Part 2 : Capturing continuations with Generators
• Part 3 : Delimited continuations
• Part 4 : Algebraic Effects and handlers

Note: initially I planned a 3-part series, but since the current post on undelimited continuations ended up taking

yelouafi

function isGenerator(x) {
  return x != null && typeof x.next === "function"
}

function isFrame(x) {
  return x != null && x._type_ === 'call_frame'
}

function call(genFunc, ...args) {

yelouafi

function*example() {
    const x = 10
    const y = yield callcc(function*(k) {
        // ...
        yield k(20)
        throw "Unreachable code"
    })
    console.log(x + y)
}

sturmenta

const admin = require('firebase-admin');
const fs = require('fs');

const serviceAccount = require('../../../../../../Private/myschool-data_transfer-key.json');

admin.initializeApp({ credential: admin.credential.cert(serviceAccount) });

const schema = require('./schema').schema;

const firestore2json = (db, schema, current) => {

jdegoes

package fpmax

import scala.util.Try
import scala.io.StdIn.readLine

object App0 {
  def main: Unit = {
    println("What is your name?")

    val name = readLine()

Lucifier129

import { interval, isObservable } from 'rxjs'
import { tap } from 'rxjs/operators'

const type = {
  isThenable: obj => !!(obj && typeof obj.then === 'function'),
  isObservable: obj => !!(obj && isObservable(obj)),
  isError: obj => obj instanceof Error,
  isObject: obj => obj != null && typeof obj === 'object'
}

freddi301

class Nothing<T> implements PromiseLike<T> {
    then<TResult1 = T, TResult2 = never>(onfulfilled?: ((value: T) => TResult1 | PromiseLike<TResult1>) | undefined | null, onrejected?: ((reason: any) => TResult2 | PromiseLike<TResult2>) | undefined | null): PromiseLike<TResult1 | TResult2> {
        return (onrejected as any)(this);
    }
}
class Just<T> implements PromiseLike<T> {
    constructor(private value: T) { }
    then<TResult1 = T, TResult2 = never>(onfulfilled?: ((value: T) => TResult1 | PromiseLike<TResult1>) | undefined | null, onrejected?: ((reason: any) => TResult2 | PromiseLike<TResult2>) | undefined | null): PromiseLike<TResult1 | TResult2> {
        return (onfulfilled as any)(this.value);
    }