NigelEarle

Migrations & Seeding

What are migrations??

Migrations are a way to make database changes or updates, like creating or dropping tables, as well as updating a table with new columns with constraints via generated scripts. We can build these scripts via the command line using knex command line tool.

To learn more about migrations, check out this article on the different types of database migrations!

Creating/Dropping Tables

dungdm93

variables:
  ANDROID_COMPILE_SDK: "28"

test:unit:
  image: circleci/android:api-${ANDROID_COMPILE_SDK}
  cache:
    key: gradle-cache
    paths: [ .gradle ]
  variables:
    # GRADLE_OPTS: "-Dorg.gradle.daemon=false"

highercomve

const compose = (fn, ...funcs) => {
  return (...args) => {
    return funcs.reduce((acc, func) => func(acc), fn(...args))
  }
}

const generate = (fn, dependency = LazyIterable, descriptor) => {
  return Object.create(
    Object.assign({ [Symbol.iterator]: fn }, dependency),
    descriptor

reillyeon

When does an async function return?

Someone recently asked me when an async function in JavaScript "returns". This is an interesting question because while a function like f() below has a return statement in it, f() actually returns much earlier than that. To understand how this works, let's take a look at an example function. Here, a() and c() are normal synchronous functions and b() is another asynchronous function.

async function f() {
  a();
  await b();
  return c();
}

danbovey

import * as SecureStore from 'expo-secure-store';
import { chunk } from 'lodash';

const chunkString = (str: string, size: number) =>
  chunk(str.split(''), size).map(s => s.join(''));

/**
 * Secure Storage with support for storing strings larger than 2048 characters
 */
const ExpoSecureStoreAdapter = {