zeusdeux

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

zeusdeux

package main

import (
	"fmt"
	"log"
	"strings"
)

// Ops
const (

zeusdeux

/* ES6/ES2015 classes */
class A {
  constructor() {
    this.a = 10
  }
  print() {
    console.log(this.a, this.b)
  }
}

zeusdeux

function mapValues(obj, fn) {
  return Object.keys(obj).reduce((result, key) => {
    result[key] = fn(obj[key], key);
    return result;
  }, {});
}

function pick(obj, fn) {
  return Object.keys(obj).reduce((result, key) => {
    if (fn(obj[key])) {

zeusdeux

{
  // The block has begun, we're in a new block scope. The TDZ for the "a" binding has begun
 
  var f = function() {
    // 2. Because f() is evaluated before `a` is actually declared, 
    // an exception will be thrown indicating to the author that
    // `a` is not yet defined.
    console.log(a); 
  };
 

zeusdeux

/* Simple flexbox based grid system */

$columns: 12;

@mixin layout-cols($device) {
  @for $i from 1 through 12 {
    .l-#{$device}-col-#{$i} {
      flex: 0 0 $i / $columns * 100%;
    }
  }

zeusdeux

Ideas for improvements to git log --graph

I will maybe someday get around to dusting off my C and making these changes myself unless someone else does it first.

Make the graph for --topo-order less wiggly

Imagine a long-running development branch periodically merges from master. The git log --graph --all --topo-order is not as simple as it could be, as of git version 1.7.10.4.

It doesn't seem like a big deal in this example, but when you're trying to follow the history trails in ASCII and you've got several different branches displayed at once, it gets difficult quickly.

zeusdeux

Why would you want to do this? Because you often don't need more. It's nice to not have to think about your "router" as this big special thing.

Instead, with this approch, your app's current pathname is just another piece of state, just like anything else.

This also means that when doing server-side rendering of a redux app, you can just do:

var app = require('your/redux/app')
var React = require('react')

zeusdeux

// use binary search to return index where given element needs to be inserted in the input array (must be sorted)
function binarySearchForInsertionIndex(arr, el, index = 0) {
  const mid = ~~(arr.length / 2)

  if (!arr.length || arr[mid] === el) return index

  if (el < arr[mid]) return binarySearchForInsertionIndex(arr.slice(0, mid), el, mid + index - 1)
  if (el > arr[mid]) return binarySearchForInsertionIndex(arr.slice(mid + 1), el, mid + index + 1)
}

zeusdeux

/*
#
# Example final output:
#
# 1000 main
#   1000 workLoop
#     900 read
#       900 __sys_read
#     100 parse
#       100 strcmp