Python source code is encoded in UTF-8 by default. Still, identifiers like variables and attributes can’t use the full Unicode alphabet. For example, you must stay away from emojis in your variable and attribute names. You can use your new class as follows: Python >>> from polar_point...
In computer science, heapsort (invented by J. W. J. Williams in 1964) is a comparison-based sorting algorithm. Heapsort can be thought of as an improved selection sort: like that algorithm, it divides its input into a sorted and an unsorted region, and it interactively shrinks the unsorte...
When we begin to build our programs where the functionality of our program includes access to services provided by other programs, we call the approach aService-oriented architecture(SOA). An SOA approach is one where our overall application makes use of the services of other applications. A non...
parser.error("Hostname is required") host = args[0] ... From this point on, the rest of the script is the same. We begin by importing only the OptionParser class from our optparse module. We create a usage statement we can give to our parser, and then we define the par...
This is one of the first Python design patterns I implemented as a programmer. That reminds me:Patterns are not invented, they are discovered. They exist, we just need to find and put them to use. I discovered this one for an amazing project we implemented many years ago: a special purp...
It is Turing complete, but contrary to the concept of a Turing machine, it is pure and does not keep any state. Functional languages get their origin in mathematical logic and lambda calculus, while imperative programming languages embrace the state-based model of computation invented by Alan ...
This is not really an ‘article’, but more of comic relief :-). It lists out various programming terms invented by real developers, that mock the various software engineering pitfalls in a typical workplace. Do read if you appreciate programming humor!
Written bySunny Patel Sunny Patel is a versatile IT consultant at CMARIX, a premier web app development company that provides flexible hiring models fordedicated developers. With 11+ years of experience in technology outsourcing, he spends his time understanding different business challenges and providi...
Collatz Sequence, or, the 3n + 1 Problem By Al Sweigart email@protected The Collatz sequence is a sequence of numbers produced from a starting number n, following three rules: `--snip--` Enter a starting number (greater than 0) or QUIT: > 26 26, 13, 40, 20, 10, 5, 16, 8, 4...
Invented over half a century ago, the hash table is a classic data structure that has been fundamental to programming. To this day, it helps solve many real-life problems, such as indexing database tables, caching computed values, or implementing sets. It often comes up in job interviews, ...