In computer science, a tail call is a subroutine call performed as the final action of a procedure. If the target of a tail is the same subroutine, the subroutine is said to be tail recursive, which is a special case of direct recursion. Tail recursion (or tail-end recursion) is particularly useful, and is often easy to optimize in implementations. Tail calls can be implemented without adding a new stack frame to the call stack. Most of the frame of the current procedure is no longer needed, and can be replaced by the frame of the tail call, modified as appropriate (similar to overlay for processes, but for function calls). The program can then jump to the called subroutine. Producing such code instead of a standard call sequence is called tail-call elimination or tail-call optimization. Tail-call elimination allows procedure calls in tail position to be implemented as efficiently as goto statements, thus allowing efficient structured programming. In the words of Guy L. Steele, "in general, procedure calls may be usefully thought of as GOTO statements which also pass parameters, and can be uniformly coded as [machine code] JUMP instructions." Not all programming languages require tail-call elimination. However, in functional programming languages, tail-call elimination is often guaranteed by the language standard, allowing tail recursion to use a similar amount of memory as an equivalent loop. The special case of tail-recursive calls, when a function calls itself, may be more amenable to call elimination than general tail calls. When the language semantics do not explicitly support general tail calls, a compiler can often still optimize sibling calls, or tail calls to functions which take and return the same types as the caller. (Wikipedia).
Timing and energy are the secret to tail swatting
A new study shows just how these rear-end swatters work to whisk away bugs before they bite. Learn more: http://scim.ag/2jbOoYK
From playlist Animals
Poetic motion of a bird in flight set to original music
From playlist My music video's
If I'm running even 1 minute late for my dog's morning walk...
I take my dog for a long walk every morning. Anytime I'm running late, this is how he acts. Also, he'd already been let out once to do his business. This is before his longer walk to tire him out before I leave for work. He's not about to explode... just excited.
From playlist My Dog
I love digital radio, but sometimes their song descriptions aren't entirely accurate...
From playlist Random
Album: Everything (Disc 2) The second disc features the original singles "Christian Says"
From playlist 80's
Speak Softly Love Classic version. "The Godfather" theme song. (please comment and rate :D)
From playlist Brilliant Music
One of the loudest underwater sounds is made by an animal you wouldn’t expect
Here’s a hint: It has something to do with mating Keep reading: http://scim.ag/2CE1DuQ
From playlist Animals
Listen to the greatest hits from the biggest bat song library
Even though the human ear can’t normally hear the ultrafast chirps, beeps, and whistles of bats, a new catalog of bat calls promises to make studying these flying mammals a whole lot easier. Learn more: http://scim.ag/1RW2ZW9
From playlist Animals
This is a video response to RootBerry Sound Effect Contest. I've been able to do this sound since I was a kid and I've never met anybody else who could do it... Anyway, forgive me for that. ;~)
From playlist Other...
RubyConf 2015 - A Muggle's Guide to Tail Call Optimization in Ruby by Danny Guinther
A Muggle's Guide to Tail Call Optimization in Ruby by Danny Guinther Submitted for your approval: a circle of torment unchronicled by the poets of old, a terror at the heart of many a horror story: SystemStackError: stack level too deep Tremble no more! Conquer the well of eternity! Beh
From playlist RubyConf 2015
Tails | SciShow Tangents Podcast
From a bunny’s seemingly-useless fluffy li’l puffball to a scorpion’s practical and deadly venom-filled stinger, the world is filled with all sorts of wonderful tails! And heck, some of them aren’t even tails at all, but that’s ok! Want more SciShow Tangents? Check out hundreds more episo
From playlist SciShow Tangents
[Rust Programming] Advent of Code 2022 Day 9 - Rope Bridge
My Rust solution for Day 9 of Advent of Code 2022 I livestream these on twitch every weekday morning, starting between 7 and 7:30am Eastern/US time. I usually stream for about 1-2 hours, depending on how well my voice holds out. Come join me! https://www.twitch.tv/unclescientist 0:00 Par
From playlist Advent of Code 2022
Lecture 1 | Modern Physics: Classical Mechanics (Stanford)
Lecture 1 of Leonard Susskind's Modern Physics course concentrating on Classical Mechanics. Recorded October 15, 2007 at Stanford University. This Stanford Continuing Studies course is the first of a six-quarter sequence of classes exploring the essential theoretical foundations of mod
From playlist Course | Modern Physics: Classical Mechanics
This is the video of my talk at the Conference on Complex Systems 2020 (CCS2020), in the satellite event organised by Alfredo J. Morales (MIT) and Rosa M. Benito (Technical University of Madrid). For privacy reasons, I have cut the video, not to show the pictures of the other participants
From playlist Talks and Interviews
Classical Mechanics | Lecture 1
(September 26, 2011) Leonard Susskind gives a brief introduction to the mathematics behind physics including the addition and multiplication of vectors as well as velocity and acceleration in terms of particles. This course is the beginning of a six course sequence that explores the theor
From playlist Lecture Collection | Classical Mechanics (Fall 2011)
How to Choose Long Tail Keywords For Explosive Search Traffic
In this tutorial, you’ll learn how to find and choose long-tail keywords with high traffic potential and/or low competition (even if they have low individual search volume). A common misconception is that long-tail keywords must be a certain length (word count) in order to be classified
From playlist Keyword Research Tutorials For SEO
TCO by: Chris Frisz Tail-call optimization (TCO) allows programmers to write interesting tail-recursive functions without worry of overflowing the program's stack memory. In languages that require constant space tail calls (i.e. Scheme and Standard ML), recursion becomes a natural and ef
From playlist Clojure Conf 2012
The Great Courses Plus (1-month free trial): http://ow.ly/1qVK302dufQ More links & stuff in full description below ↓↓↓ Dr James Grime discusses Penney's Game - a cool probability trick to play with your friends. Extra footage: https://youtu.be/JniOm7ZvXE8 Support us on Patreon: http://ww
From playlist Coins on Numberphile
Snippet: Watch the world’s loudest bird scream for a mate
White bellbirds shatter the record for noisiest call -- and maybe their mates' eardrums Read more: https://scim.ag/366mAOD Credit: Anselmo d’Affonseca About Science Snippets These videos are short snippets from researchers' work—often videos actually used as data in a study or to demon
From playlist Animals
How To Create A Snake Game In React.Js | Session 03 | #reactjs | #programming
Don’t forget to subscribe! This project series will cover all details that are necessary to build a complete snake game in React.js using JavaScript. We will set up all the necessary steps to build a similar game including framework setup and advanced concepts such as state management. W
From playlist Create A Snake Game In React.Js