gohkhoonhiang

######
## A reminder of how ruby's access scope works in inheritance
## public: can be called by ownself, any other class
## protected: can be called by ownself, sibling class
## private: can be called by ownself
######

class Animal                                                                                                                                                                                                                     
  attr_reader :breed                                                                                                                                                                                                             
                                                                                                                                                                                                                                 

gohkhoonhiang

function x1(value) {
  return (
    Object.is(value, undefined) ||
    Object.is(value, null)
  );
}

function x2(val1, val2, val3) {
  return (
    val1 >= val2 &&

gohkhoonhiang

# shortcut to a declared environment variable to a directory
# eg. declare myrepo=~/Documents/repo
# then do 'to myrepo' will be equivalent to 'cd ~/Documents/repo'
function to() {
    if [ -z "$1" ]; then
        echo "Empty argument"
        return
    fi
    eval temp_var=\$$1
    if [ -z "${temp_var}" ]; then

gohkhoonhiang

import sys

def create_map(filename):
    f = open(filename, "r")
    lines = f.readlines()

    rows = int(lines[0].split()[0])
    cols = int(lines[0].split()[1])

    skimap = [[int(c) for c in lines[i].split()] for i in range(1,len(lines))]