seivan

DEPRECATED

Please see: https://github.com/kevinSuttle/html-meta-tags, thanks for the idea @dandv!

---

Copied from http://code.lancepollard.com/complete-list-of-html-meta-tags/

Basic HTML Meta Tags

seivan

getGitInfo()
{
    checksum=$(git rev-parse --short HEAD 2> /dev/null)
    branch=$(git symbolic-ref --short HEAD 2> /dev/null)
    if [ ! -z $branch ] && [ ! -z $checksum ]; then
        echo -e " ($branch $checksum)"
    elif [ ! -z $checksum ]; then
        echo -e " ($checksum)"
    elif [ ! -z $branch ]; then
        echo -e " ($branch)"

seivan

React - Functional error boundaries

Thanks to React hooks you have now happily turned all your classes into functional components.

Wait, all your components? Not quite. There is one thing that can still only be implemented using classes: Error boundaries.

There is just no functional equivalent for componentDidCatch and deriveStateFromError yet.

Proposed solution

seivan

import * as React from 'react';
import { Component, ComponentClass, createRef, forwardRef, Ref } from 'react';

const myHoc = <ComposedComponentProps extends {}>(
    ComposedComponent: ComponentClass<ComposedComponentProps>,
) => {
    type ComposedComponentInstance = InstanceType<typeof ComposedComponent>;

    type WrapperComponentProps = ComposedComponentProps & {
        wrapperComponentProp: number;

seivan

# This demonstrates that, when using async/await, a crash in the task will crash the caller
defmodule Tasker do
  def good(message) do
    IO.puts message
  end

  def bad(message) do
    IO.puts message
    raise "I'm BAD!"
  end

seivan

var Promise = require('bluebird');

var funcs = Promise.resolve([500, 100, 400, 200].map((n) => makeWait(n)));

funcs
  .each(iterator)       // logs: 500, 100, 400, 200
  .then(console.log)    // logs: [ [Function], [Function], [Function], [Function] ]

funcs
  .mapSeries(iterator)  // logs: 500, 100, 400, 200

seivan

/*:
## Phone Words

Generate a collection of words that can be represented by a given phone number. If a phone number contains the digits `1` or `0` then split up the phone number and find the words for each of the substrings as long as each substring has more than one digit. Non-keypad characters can be ignored. Optionally, filter out words so that only dictionary words are present in the result.

    ╔═════╦═════╦═════╗
    ║  1  ║  2  ║  3  ║
    ║     ║ abc ║ def ║
    ╠═════╬═════╬═════╣
    ║  4  ║  5  ║  6  ║

seivan

public struct Promise<T> {
  typealias Fulfiller = (T) -> (Void)
  typealias Rejecter = (Void) -> (Void)
  typealias Resolver = (_ fulfill: @escaping Fulfiller, _ reject: @escaping Rejecter) -> (Void)
  let resolver: Resolver
  init(_ resolver: @escaping Resolver){
    self.resolver = resolver
  }
  func then<U>(_ execute: @escaping ((T) -> U)) -> Promise<U> {
    return Promise<U>({(fulfill, reject) in

seivan

Initialize

gitflow	git
git flow init	git init
git commit --allow-empty -m "Initial commit"
git checkout -b develop master

Connect to the remote repository

seivan

#!/bin/sh

# Script for managing build and version numbers using git and agvtool.

# Change log:
# v1.0 18-Jul-11 First public release.
# v1.1 29-Sep-12 Launch git, agvtool via xcrun.


version() {