Iteration is the programming buzzword for a loop, which is an essential part of programming. In this video, Simon explains how to create, customize and stop a loop. JavaScript is used as the basis for this lesson, but the skills are applicable to many programming languages and will help lay the ground work for setting different loop types.
So let's talk about iteration.…This is the programming buzzword for a loop.…And here's the idea.…You start writing some code.…A few statements that deal with, say, looking in all the MP3 files in a folder or…changing the position of an image on the screen.…So we write some statements to do it once.…Then we figure out we need to do it again.…So we write them again and again and again.…All these can get pretty tedious and rather than write it out several times or…even several thousand times, I'd like to be able to write my statements once…and then just say "Repeat this."…Repeat it 5 times or repeat it 5,000 times, or keep repeating until told to…stop, or go through all the fields on a web page or go through every MP3 file in a folder.…
So we might repeat two statements, we might repeat a dozen, we might repeat a hundred.…And this is what we do by creating loops and you'll also hear this called iteration.…Now creating loops is actually easy.…The main issue with any loop is not when to loop. It's when to stop.…
Author
Released
9/22/2011Finally, the course compares how code is written in several different languages, the libraries and frameworks that have grown around them, and the reasons to choose each one.
- Writing source code
- Understanding compiled and interpreted languages
- Requesting input
- Working with numbers, characters, strings, and operators
- Writing conditional code
- Making the code modular
- Writing loops
- Finding patterns in strings
- Working with arrays and collections
- Adopting a programming style
- Reading and writing to various locations
- Debugging
- Managing memory usage
- Learning about other languages
Skill Level Beginner
Duration
Views
Q: Using TextEdit with Mac OS 10.9 Mavericks?
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Introduction
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Welcome1m 13s
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1. Programming Basics
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What is programming?5m 45s
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Writing source code5m 34s
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2. Core Programming Syntax
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Why JavaScript?4m 45s
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Requesting input4m 50s
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3. Variables and Data Types
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Working with numbers5m 4s
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Working with operators4m 47s
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Properly using white space6m 46s
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4. Writing Conditional Code
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Setting comparison operators6m 59s
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5. Modular Code
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Breaking your code apart4m 1s
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Understanding variable scope2m 23s
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6. Iteration: Writing Loops
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Introduction to iteration4m 28s
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Writing a while statement5m 24s
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Creating a for loop3m 39s
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7. More About Strings
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8. Collections
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Working with arrays5m 46s
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Array behavior5m 29s
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9. Programming Style
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Programming style5m 55s
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Writing pseudocode4m 55s
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10. Input and Output
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Event driven programming7m 47s
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Introduction to file I/O6m 51s
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11. When Things Go Wrong
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Introduction to debugging5m 57s
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Understanding error messages3m 21s
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Using debuggers8m 2s
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12. Introduction to Object Orientation
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Using classes and objects6m 28s
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13. Advanced Topics
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14. Exploring the Languages
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Introduction to languages1m 42s
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C-based languages4m 40s
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The Java world3m 13s
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Ruby3m 4s
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Python2m 56s
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Objective-C4m 3s
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Libraries and frameworks3m 25s
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Conclusion
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Where to go from here1m 2s
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Video: Introduction to iteration