Code flow

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A Computer Glossary

Charles & Ray Eames 1968

Produced for the IBM Corporation pavilion at Hemisfair, the 1968 Worlds Fair in San Antonio, Texas.

Code

http://rosettacode.org/wiki/Category:Draft_Programming_Tasks

http://rosettacode.org/wiki/99_Bottles_of_Beer

Expression / Evaluation

Some expressions for the console...

5

3

"Tristram"

'SHAndy'

Operations

5 * 3

100 - 1

3 * 8

"Tristram" + "Shandy"

Operations: Functions

Math.sqrt (25)

Math.sqrt (26)

Objects

"Tristram".toUpperCase

?!

"Tristram".toUpperCase()

Assignment

Assignment is the process of storing an expression in a "name", called a variable.

x = 5 * 3

name = "Tristram"

Assignment ++

x = x + 1

x += 1

x++

name = name + " Shandy"

DOM

c=document.getElementById("c")

Reaching into the document and grabbing hold of the page.

Canvas

The canvas tag was introduced by Apple and has been standardized to become part of HTML5.

BASIC

BASIC example

Branch

http://en.wikipedia.org/wiki/Conditional_jump

Handouts

Assignment, GeneralImperative + ProgramHighLow

Afternoon: Image Manipulation

The CanvasPixelArray contains height x width x 4 bytes of data, with index values ranging from 0 to (height x width x 4)-1.

context.putImageData

! Come up with examples showing variable scope.