# Two new keywords -- "doing" introduces a single unnamed block 
# as a parameter to a function after the normal parameters.
# "where" can be used multiple times to introduce unlimited
# blocks via named parameters.

# scoped file operations with a hypothetical error handler
open("somefile", "r") doing (fd):
  print fd.read()
where error(e):
  print e

# sorting
a = [2, 1, 4, 3]
a.sort() doing (a, b):
  return cmp(b, a)

# let's write our own syntax for try/finally!
def attempt(block, no_matter_what=None):
  try:
    block()
  finally:
    if no_matter_what: no_matter_what()

# and use that:
attempt() doing:
  1 + hello
where no_matter_what():
  print "I always get printed"

# here's a crazy idea for dict iteration connected to generators
somedict.iteritems() doing (k, v):
  if v:
    print k, "has a value"