Introduction to iteration

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.…