hrishimittal

#Given an array, get counts of occurences for each element
#H/T http://jerodsanto.net/2013/10/ruby-quick-tip-easily-count-occurrences-of-array-elements/
def count_array_element_occurences(arr)
  arr.each_with_object(Hash.new(0)) { |word,counts| counts[word] += 1 }
end

#Given a hash, convert it to an HTML table
def hash_to_table(h)
  t = "<table><thead>"
  if h.present?

hrishimittal

Keybase proof

I hereby claim:

• I am hrishimittal on github.
• I am hrishio (https://keybase.io/hrishio) on keybase.
• I have a public key whose fingerprint is 8A14 B5B8 2EFD B349 E1F7 F38A C84E 006F 6C18 3EED

To claim this, I am signing this object:

hrishimittal

#Dump database
pg_dump -Fc -f filename.pgdump database_name

#Restore db from dump
dropdb database_name && createdb database_name
pg_restore -n public -x -d database_name -j 2 -Fc filename.pgdump > /dev/null


psql:
#create role

hrishimittal

#ImportXml function for scraping web data into Google Sheets

Note: All URLs must include the protocol - http:// or https://

Page Title

=IMPORTXML(URL, "//title")

Page Description

hrishimittal

<%= react_component('Lists', lists: @lists) %>

hrishimittal

import React from 'react';

export const FormErrors = ({formErrors}) =>
  <div className='formErrors'>
    {Object.keys(formErrors).map((fieldName, i) => {
      if(formErrors[fieldName].length > 0){
        return (
          <p key={i}>{fieldName} {formErrors[fieldName]}</p>
        )        
      } else {

hrishimittal

[title] How to use React with a Rails 5 API app - A hands-on tutorial

[intro]

• React and Rails make a great combination
• In this hands-on tutorial, I'll show you how to build a complete React app that works with a Rails 5 API
• You need to be comfortable with Rails but don't need to be a JavaScript or React expert
• What we're going to build - an Idea board!
• Outline of the steps we'll take to build this app

hrishimittal

#Put this in application_controller.rb to trace all redirects

  def redirect_to(options = {}, response_status = {})
    puts("Redirected by #{caller(1).first rescue "unknown"}")
    super(options, response_status)
  end

#Put this in application_controller.rb to trace all redirects

hrishimittal

Open all files with git merge conflicts in MacVim

git diff --name-only | uniq | xargs mvim

When git encounters a merge conflict, e.g. during a rebase, it drops you back into the shell with a dirty working directory. I like this one-liner for opening all files with a merge conflict in MacVim.

Once you're in Vim, you can then switch between the files with :n and :prev, or another favourite: :w | n (save current file and open the next command line-supplied file).

UPDATE: see below for a version that works with real terminal commands.

hrishimittal

import React from 'react';
import { StyleSheet } from 'react-native';
import WebViewLeaflet from 'react-native-webview-leaflet';

onLoad = (event) => {
  const mapLayers = [
    {
      name: 'OpenStreetMap',
      checked: 'true',
      type: 'TileLayer',