Switch-To-Coffeescript-Code-Snippets-2

7.coffee

# While invoking a function you don't have to put the arguments in parenthesis. 
# Instead of writing
console.log(message)
# You can write
console.log message

# Although this is convenient, it can be confusing for nested function calls
foo bar 2,3
# is equivalent to
foo(bar(2,3))

# Also you cannot skip parenthesis, if you are invoking a function without
# any arguments.
foo bar
# is equivalent to
foo(bar)
# and not
foo(bar())

8.coffee

# Simple dictionary
point1 = x:1, y:3

# For nested dictionaries
point2 =
  x:1
  y:3
  attributes :
    weight : 3
    label : 'A'

8.js

point1 = {
  x: 1,
  y: 3
};

point2 = {
  x: 1,
  y: 3,
  attributes: {
    weight: 3,
    label: 'A'
  }
};

9.coffee

# Will compile successfully
if x is 23 and \
y is 34
  foo(x)

# Will throw compiler error - note the indent
if x is 23 and \
  y is 34
  foo(x)