Skip to Main Content
Exercises in Programming Style
book

Exercises in Programming Style

by Cristina Videira Lopes
November 2015
Intermediate to advanced content levelIntermediate to advanced
304 pages
5h 23m
English
Chapman and Hall/CRC
Content preview from Exercises in Programming Style

Chapter 12

Closed Maps

image

12.1 Constraints

  • The larger problem is decomposed into things that make sense for the problem domain.
  • Each thing is a map from keys to values. Some values are procedures/functions.
  • The procedures/functions close on the map itself by referring to its slots.

12.2 A Program in this Style

  1 #!/usr/bin/env python
  2 import sys, re, operator, string
  3
  4 # Auxiliary functions that can't be lambdas
  5 #
  6 def extract_words(obj, path_to_file):
  7 with open(path_to_file) as f:
  8  obj['data'] = f.read()
  9 pattern = re.compile('[\W_]+')
 10 data_str = ''.join(pattern.sub(' ', obj['data']).lower())
 11 obj['data'] = data_str.split()
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Exercises for Programmers

Exercises for Programmers

Brian P. Hogan
Street Coder

Street Coder

Sedat Kapanoglu
Handbook of Constraint Programming

Handbook of Constraint Programming

Francesca Rossi, Peter van Beek, Toby Walsh

Publisher Resources

ISBN: 9781482227376