- Let's take a look at how recursion works,…and then, after we've done that, we will take a look…at how recursion is being used to walk…through all of this directory.…We'll see how "filepath-walk" is implemented…in the standard library…and we'll see recursion at use there.…To understand recursion, I think "factorial" is…the best example to begin with.…Here's the basic idea of recursion.…We have "func main" and, in here,…we're calling function, "factorial,"…and factorial's going to return an "int"…and we're passing into at "4" as an argument.…
Factorial has a parameter of wanting an int,…and we are passing in 4 as an argument.…Just making a distinction there…between parameter and argument.…What this does is, if x equals "zero,"…then we're going to return "one."…Otherwise, we're going to return "x"…multiplied by "factorial (x-1)."…We're calling factorial again, and we're passing…in a new number, and then that's…going to return a number.…There's functions nested within functions…nested within functions.…When you first come across this,…
Author
Released
2/16/2016Todd introduces challenges and then provides overviews of his solutions in Go. Challenges include topics such as statistical analysis, searching directories for images, and accessing peripheral devices.
Visit other courses in the series to see how to solve the same challenges in languages like C++, C#, JavaScript, PHP, Python, R, Ruby, and Swift.
Skill Level Beginner
Duration
Views
The files have moved, and I can't access them via HTTP as shown in the course.
Related Courses
-
Learning Go
with David Gassner3h 48m Beginner
-
Introduction
-
Welcome1m 11s
-
Why choose Go?4m 33s
-
-
1. Problem 1—Exploring Lake Pend Oreille
-
Exploring Lake Pend Oreille3m 43s
-
Solution overview1m 31s
-
Working with files9m 20s
-
Reading file contents7m 45s
-
Calculating mean6m 16s
-
Calculating median6m 27s
-
Retrieving files using HTTP7m 31s
-
-
2. Problem 2—Image Analysis
-
Image analysis2m 54s
-
Solution overview8m 44s
-
Working with images10m 25s
-
Finished solution1m 2s
-
-
3. Problem 3—Eight Queens
-
Eight queens1m 50s
-
Solution overview3m 27s
-
Designing our alogrithm4m 10s
-
-
4. Problem 4—Accessing Peripherals
-
Accessing peripherals1m 23s
-
Solution overview5m 9s
-
Mouse input and audio output4m 19s
-
Solution4m 28s
-
-
5. Problem 5—Recursion and Directories
-
Solution overview5m 48s
-
Understanding recursion7m 53s
-
6. Problem 6—Building the Web
-
Building the web1m 32s
-
Solution overview3m 13s
-
Understanding templating3m 35s
-
Parsing data7m 15s
-
- Mark as unwatched
- Mark all as unwatched
Are you sure you want to mark all the videos in this course as unwatched?
This will not affect your course history, your reports, or your certificates of completion for this course.
CancelTake notes with your new membership!
Type in the entry box, then click Enter to save your note.
1:30Press on any video thumbnail to jump immediately to the timecode shown.
Notes are saved with you account but can also be exported as plain text, MS Word, PDF, Google Doc, or Evernote.
Share this video
Embed this video
Video: Understanding recursion