reading-notes

These are my reading notes for Code Fellows

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Table of Contents

Home

Reading Day 1

Reading Day 2

Read04

Read05

Read06a

Read07

Comparison and Logical Operators

== IS EQUAL TO

!= IS NOT EQUAL TO

=== STRICT EQUAL TO

!== STRICT NOT EQUAL TO

> GREATER THAN

< LESS THAN

>= GREATER THAN OR EQUAL TO

<= LESS THAN OR EQUAL TO

Logical Operators

The below are Logical Operators:

&& is a Logical And

• Asks if 2 expressions both result in true

  Tests more than one condition

|| is a Logical Or

• Asks if either expressions result in true

  Tests at least one condition

! is a Logical Not

• If an expression is true, it changes it to false

  Reverses the state of an expression

Loops

A code block will run repeatedly (in a loop) until it returns the condition of false.

for runs a code a certain number of times

while code will continue to run as long as a condition is true

do...while like while, with some caveats

Loop Counters

• Initialization
  • Create a variable and sets it to a certain number (for example, 0)
• Condition
  • Loop will continue until the counter reaches a certain number (for example <10)
• Update
  • Every time the code within curly braces is run, it changes the counter value (for example i++ or i-- adds or subtracts one, respectively)