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A Nibble of Lazy Evaluation

Better Programming

Eager vs strict vs non-strict vs lazy — what does it all mean? I envy koalas for their ability to be supremely comfortable in the most awkward of places. Photo by David Clode on Unsplash Nibble: a sm...

Exploring Lazy Evaluation in Python

Level Up Coding

L azy evaluation is a programming concept where expressions or computations are not evaluated immediately, but are delayed until their results are actually needed. This can improve performance and mem...

How Lazy Evaluation Works in Ruby

Better Programming

During our day-to-day work, we as developers quite often have to deal with big data or — sometimes — data of unknown size. We parse big files and import the stuff we need, we are scraping some data…

Unleash the power of lazy evaluation!

Python in Plain English

Unleash the power of lazy evaluation! Dive into Python Generators and master iterators with yield. 🚀🧩 Python Generators are a special class of functions in Python that return an iterable set of ite...

What's Lazy Evaluation in Python?

Real Python

This tutorial explores lazy evaluation in Python and looks at the advantages and disadvantages of using lazy and eager evaluation methods. By the end of this tutorial, you'll clearly understand which ...

What is Lazy Evaluation in Python?

Towards Data Science

If you’ve never heard of Lazy Evaluation before, Lazy Evaluation is an evaluation strategy which delays the evaluation of an expression until its value is needed and which also avoids repeated…

What's Lazy Evaluation in Python?

Real Python

In this quiz, you'll test your understanding of the differences between lazy and eager evaluation in Python. By working through this quiz, you'll revisit how Python optimizes memory use and computatio...

3 Reasons Why Spark’s Lazy Evaluation is Useful

Towards Data Science

Spark’s Lazy Evaluation and Why You Should Care Continue reading on Towards Data Science

Guide to Lazy Evaluation with Dask | Stephanie Kirmer

Towards Data Science

Lazy evaluation doesn't have to be confusing or complicated - in this guide, learn the basic concepts you need to get started!

Lazy Evaluation using Recursive Python Generators

Towards Data Science

Can recursive functions use “lazy evaluation”? — Yes, they can — Using Python’s generator functions! Continue reading on Towards Data Science

The missing lazy numbers: implementation

R-bloggers

In Haskell, for any type T (for example Double), there is a corresponding type Maybe T. An object of this type either has form Just x, where x is of type T, or is Nothing. Thus one can use the May... ...

Using Lazy Evaluation To Prevent Parameter Drilling in Dependency Injection

Level Up Coding

In one of the solutions toward mocking I mention dependency injection as an optimal way to decouple objects that yield side-effects when instantiated from objects of interest to test. While I do…

Pitfall combining assignment and side-effects

Essential Java

Occasionally we see StackOverflow Java questions (and C or C++ questions) that ask what something like this: i += a[i++] + b[i--]; evaluates to … for some known initial states of i , a and b . General...

Java Streams Lazy Evaluation Pitfall

Better Programming

Photo by Will Swann on Unsplash Recently, I came across some code that did not behave as expected. After spending some time debugging and adding missing unit tests, I discovered that the reason for th...

Lazy Arrays and Their Potential Applications in Data Science

Towards Data Science

Data Science is all about the quest for the perfect data to fit the perfect model. Sometimes, certain models might need more data than others, and this is for the reason of bias. If you would like to…...

From Eager to Fused to Lazy

Javarevisited

An evolution of iteration methods in Eclipse CollectionsWhen the first iteration methods were implemented in Eclipse Collections they were all eager. Eager is the default behavior on the collection in...

Lazy Neural Networks

Towards Data Science

For difficult problems neural networks can sometimes lack robustness whereby they might fail to perform accurate predictions on under classified examples and edge cases. This can still be the case…

Demystifying Scala Eager Lazy Memoized — How Cats Eval Can Save Your Recursive Stack From Overflow

Level Up Coding

After learning more and more about functional programming, a lot of the operations that we usually do in Java, JavaScript, and other imperative languages, are implemented recursively. In Scala…

Eager is Easy, Lazy is Labyrinthine

Javarevisited

From initialization to iteration, learning eager is easier than learning lazy.An eager algorithm executes immediately and returns a result. A lazy algorithm defers computation until it is necessary to...

Being Lazy is Useful — Lazy Evaluation in Spark

Analytics Vidhya

Let’s say you have a very large data file that contains millions of rows. You need to perform analysis on that by doing some manipulations like mapping, filtering, random split or even very basic…

Expression evaluation order

Essential Java

Java expressions are evaluated following the following rules: Operands are evaluated from left to right. The operands of an operator are evaluated before the operator. Operators are evaluated accordin...

Lazy Initialization

Dive intro Deep Learning Book

So far, it might seem that we got away with being sloppy in setting up our networks. Specifically, we did the following unintuitive things, which might not seem like they should work: We defined the n...

Functional Programming, Simplified

Better Programming

To understand this definition, we will use a real-life example. Let’s assume that we have a shipping warehouse and a large store containing a variety of products (books, clothes, certain canned food…

The lazy numbers in R

R-bloggers

My new package lazyNumbers is a port of the lazy numbers implemented in the C++ library CGAL. The lazy numbers represent the real numbers and arithmetic on these numbers is exact. ... Continue reading...