raineorshine

// A
// [get some input from the user and store it in string str]
bool zFound = false;
while(str != "done")
{
    if(str.startsWith("Z"))
    {
        cout << "Z encountered! Terminating!" << endl;
        break;
    }

raineorshine

@media all and (max-width: 1024px) {...}
@media all and (min-width: 800px) and (max-width: 1024px) {...}
@media not screen and (color) {...}
@media only screen and (orientation: portrait) {...}

@media all and (max-width: 420px) {
  section, aside {
    float: none;
    width: auto;
  }

raineorshine

/*
Cheetahs can run up to 60mph, or 88 feet per second. Gazelles can run up to 30mph, or 44 feet per 
second. Write a recursive function that determines how many seconds it takes for a cheetah to catch 
a gazelle given an initial starting point and how far away the gazelle is.

e.g. catchPrey(0, 1000) returns the number of seconds it takes for a cheetah at 0 feet to catch a 
gazelle at 1000 feet.

To make things a little more interesting, the gazelle sees the cheetah at 500 feet and starts running 
like hell.

raineorshine

General Tip

"The trick is to catch exceptions at the proper layer, where your program can either meaningfully recover from the exception and continue without causing further errors, or provide the user with specific information, including instructions on how to recover from the error. When it is not practical for a method to do either of these, simply let the exception go so it can be caught later on and handled at the appropriate level."

Resources

Advantages of Exceptions
Excellent example of separating error-handling code from program logic

Three Rules for Effective Exception Handling
Longer explanation and case study of exception use, including the basic principles of "throw early" and "catch late". Clear and thorough.

raineorshine

import javax.swing.*;
 
// The primary class is a JFrame which can be shown when the program starts
public class JListDemo extends JFrame {
    
    /*  main is just housed inside of the primary class. It could be part of a driver
        class but this implementation is simpler. Here we just create a new 
        instance of the class to show the frame which contains the UI and all the 
        application logic. */
    public static void main(String[] args) {

raineorshine

/*
Exercise #1:
1. declare a variable and assign it the value "hello"
2. write an if-then statement that prints "good" to the console if the variable contains more than 3 characters, otherwise it prints "not enough"
3. reassign the variable to have the value "boo"
4. run the if-statement again
*/
var hello= "hello"
if (hello.length >3) {
    console.log ("good");

raineorshine

/* ARRAYS */
var fruit = ["pineapple", "mango", "limón"]; // array literal (i.e. creating a new array by typing in the values directly)

var empty = []; // an array with no items

// accessing an array
console.log( fruit[0] ); // print out 'pineapple'
console.log( fruit[1] ); // print out 'mango'

var myfruit = fruit[1];

raineorshine

// #2: Find out if all the names in a list are less than 10 characters. (Store true or
// false in a variable to indicate the final result)
var names = ["John", "Dave", "James Fenimore Cooper", "Sarah", "Gene", "Alexandria"];
var result = true;

for(var i=0; i<names.length; i++) {
    if(names[i].length >= 10) {
        result = false;
        break; // special statement that immediately ends the loop
    }

raineorshine

// Files & Commands
cmd + p                         // quick file switcher
cmd + shift + p                 // command palette
cmd + r                         // quick function search
cmd + shift + r                 // rename file

// Selection
cmd + option + g                // select all instances of word under cursor

// Find & Replace

raineorshine

// Navigation
w                       // move to the end of a word
b                       // move to the beginning of a word
%                       // go to matching bracket
0                       // go to beginning of line
$                       // go to end of line
{                       // move up by a block
}                       // move down by a block
gg                      // move to the top of the file
G                       // move to the bottom of the file