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Krishna / LearnGoIn5mins.md
Last active January 4, 2021 19:17 — forked from prologic/LearnGoIn5mins.md
Learn Go in ~5mins
@Krishna
Krishna / Calendar.swift
Created July 2, 2020 23:50 — forked from mecid/Calendar.swift
Calendar view in SwiftUI
import SwiftUI
fileprivate extension DateFormatter {
static var month: DateFormatter {
let formatter = DateFormatter()
formatter.dateFormat = "MMMM"
return formatter
}
static var monthAndYear: DateFormatter {
@Krishna
Krishna / String+EmojiCheck.swift
Last active June 22, 2020 14:48 — forked from krummler/String+EmojiCheck.swift
Emoji Checking for Swift 5.0 and up
import Foundation
// Source: https://stackoverflow.com/a/39425959
extension Character {
/// A simple emoji is one scalar and presented to the user as an Emoji
var isSimpleEmoji: Bool {
guard let firstScalar = unicodeScalars.first else { return false }
return firstScalar.properties.isEmoji && firstScalar.value > 0x238C
}
@Krishna
Krishna / api_controller.rb
Created May 17, 2020 02:48 — forked from eliotsykes/api_controller.rb
Token Authentication in Rails API Controller and Request Spec
# File: app/controllers/api/api_controller.rb
class Api::ApiController < ActionController::Base
# Consider subclassing ActionController::API instead of Base, see
# http://api.rubyonrails.org/classes/ActionController/API.html
protect_from_forgery with: :null_session
before_action :authenticate
def self.disable_turbolinks_cookies
skip_before_action :set_request_method_cookie
@Krishna
Krishna / clapperboard.js
Created April 23, 2020 13:03 — forked from pragdave/clapperboard.js
Trivial JS function to help sync sound and screen when recording a browser based screencast
export function clapperBoard() {
let audio = new AudioContext()
let beep = audio.createOscillator()
let flash = document.createElement("div")
beep.frequency.value = 440 * 5
beep.connect(audio.destination)
flash.classList.add("clapperboard")
beep.start()
@Krishna
Krishna / libdispatch-efficiency-tips.md
Created March 10, 2020 18:15 — forked from tclementdev/libdispatch-efficiency-tips.md
Making efficient use of the libdispatch (GCD)

libdispatch efficiency tips

I suspect most developers are using the libdispatch inefficiently due to the way it was presented to us at the time it was introduced and for many years after that, and due to the confusing documentation and API. I realized this after reading the 'concurrency' discussion on the swift-evolution mailing-list, in particular the messages from Pierre Habouzit (who is the libdispatch maintainer at Apple) are quite enlightening (and you can also find many tweets from him on the subject).

My take-aways are:

@Krishna
Krishna / simple_authentication_rails_5_bcrypt_and_has_secure_password.md
Created September 12, 2019 16:36 — forked from iscott/simple_authentication_rails_5_bcrypt_and_has_secure_password.md
Cheat Sheet: Simple Authentication in Rails 5 with has_secure_password

Cheat Sheet: Simple Authentication in Rails 5 with has_secure_password

The goal of this cheatsheet is to make it easy to add hand-rolled authentication to any rails app in a series of layers.

First the simplest/core layers, then optional layers depending on which features/functionality you want.

Specs
AUTHOR Ira Herman
LANGUAGE/STACK Ruby on Rails Version 4 or 5
@Krishna
Krishna / cli-nsrunloop.m
Created June 13, 2018 08:20 — forked from syzdek/cli-nsrunloop.m
Creating an NSRunLoop for a command line utility.
#import <Foundation/Foundation.h>
int main(int argc, const char * argv[])
{
NSRunLoop * runLoop;
CLIMain * main; // replace with desired class
@autoreleasepool
{
// create run loop
@Krishna
Krishna / SafeSet.m
Created June 13, 2018 08:17 — forked from ridiculousfish/SafeSet.m
A thread safe set written in Objective-C
#import <Foundation/Foundation.h>
@interface SafeSet : NSObject {
NSMutableSet *set;
dispatch_queue_t queue;
}
@end
@implementation SafeSet
/*
Copyright (C) 2016 Apple Inc. All Rights Reserved.
See LICENSE.txt for this sample’s licensing information
Abstract:
`DirectoryMonitor` is used to monitor the contents of the provided directory by using a GCD dispatch source.
*/
import Foundation