# Tech Tuesday: Control Structures

**Published by:** [Continuations](https://continuations.com/)
**Published on:** 2012-07-10
**Categories:** tech tuesday, programming, control structures
**URL:** https://continuations.com/tech-tuesday-control-structures

## Content

Last time in the Tech Tuesday cycle on programming we saw that so-called reserved words have special meaning. They effectively constitute the built-in vocabulary of a programming language. Now let’s go all the way back to the basic analogy that I used for the overview post: programming is telling a computer what to do, which is very much like telling a person what to do. One of the expressive abilities that is required for that are conditionals, as in: if the front door is locked, then go around the house to the back door. In other words, some of the instructions apply only if a certain condition is encountered. All programming languages have some notion of a conditional statement. For instance, in Javascript we can say

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