ameernormie

### Install
brew install rbenv

### Installing Ruby versions

# list all available versions:
$ rbenv install -l

# install a Ruby version:
$ rbenv install 2.0.0-p247

ameernormie

Postgresql

### Install
brew install postgresql
postgres --version
brew services start postgresql


### Upgrade
brew upgrade postgresql

ameernormie

fn main(){
    let s = String::from("hello world");
    
    let x = first_word(&s);
    
    
    println!("first word is {}", x);
}

ameernormie

fn main() {
    let s1 = gives_ownership();         // gives_ownership moves its return
                                        // value into s1

    let s2 = String::from("hello");     // s2 comes into scope

    let s3 = takes_and_gives_back(s2);  // s2 is moved into
                                        // takes_and_gives_back, which also
                                        // moves its return value into s3
} // Here, s3 goes out of scope and is dropped. s2 goes out of scope but was

ameernormie

fn main() {
    let s = String::from("hello");  // s comes into scope

    takes_ownership(s);             // s's value moves into the function...
                                    // ... and so is no longer valid here

    let x = 5;                      // x comes into scope

    makes_copy(x);                  // x would move into the function,
                                    // but i32 is Copy, so it’s okay to still

ameernormie

const App = createAppContainer(
  createStack({

    LoggedSwitch: createSwitch({

      // When user is authenticated
      LoggedIn: createStack({

        // The logged in root is generally a tab or drawer navigator
        LoggedInRoot: createTabsOrDrawer({

ameernormie

/**
 * This service will be used if we don't have access to navigation
 * prop in the component. Usually the components that are outside the
 * heirarchy of the nav screens don't have access to the navigation params.
 */
import { NavigationActions } from 'react-navigation';
import { defaultTo } from 'ramda';
let _navigator: any;

function setTopLevelNavigator(navigatorRef: any) {

ameernormie

this is my first gist ever.