User:Inge Hoonte/oct20 2011

Link: Oct 20 class

Formal computer language -> mathematical or computing, not spoken, expressing ideas that can be processed

Procedural / Imperative -> tell the computer what to do, compare to following a recipe

• bash
• Python
• PHP, Java, javascript, Rudy....

Declarative -> more descriptive, domain specific, compare to improv cooking

• SVG
• CSS, HTML
• Lisp, Prolog
• XPath

ipython: text is always the exception. put quotes around it. name = "inge" -> expression gets stored in a variable

name ="..." print "Hello", name, "etc"

str = string = textual object int = integer float = not whole number, eg 1.56

x = """inge
  ....: and
  ....: more
  ....: stuff
  ....: and more
  ....: stuff"""
In [16]: x
Out[16]: 'inge\nand\nmore\nstuff\nand more\nstuff'

===

lunch

====

XML, SVG

• make sure you always open and close the code: header, closer
• .format after """ looks for previous {} and whatever is in there:

for x in range(100):
   print """
<rect
      style="fill:#ff00ff"
      id="rect2985"
      width="{0}"
      height="242.85715"
      x="{1} {2}"
      y="252.36218" />
""".format(x*2, x*2, x)

==

for x in range(1, 100):
   print """
<rect
      style="fill:none;stroke:#ff000f;stroke-opacity:25"
      id="rect2985"
      width="{0}"
      height="100"
      transform="rotate (45 {1} {2})"
      x="{1}"
      y="{2}" />
""".format(x*10, x*3, x*99)

-> prints rectangles that are all rotated 45 degrees