Programming

1. Variables in codeReadyNamed places that hold a value your program can read and change.
2. Basic typesLockedThe kinds of values a language has built in - integers, floating-point numbers, booleans, strings - and what you can do with each.Opens after: Variables in code
3. Functions in codeLockedNamed, reusable blocks of code that take inputs (parameters) and produce outputs (return values).Opens after: Variables in code
4. ConditionalsLockedCode that runs only when a condition is true - if, else, switch - letting a program make decisions.Opens after: Basic types
5. GoroutinesLockedGo's lightweight concurrent functions - started with the go keyword and multiplexed by the Go runtime onto OS threads.Opens after: Functions in code, Thread
6. PointersLockedValues that hold the memory address of another value, letting code refer to and modify that value indirectly.Opens after: Variables in code, Functions in code
7. ChannelsLockedTyped pipes that goroutines use to send values to each other - and to synchronize while doing it.Opens after: Goroutines
8. LoopsLockedRepeating a block of code - a fixed number of times, while a condition holds, or over each element of a collection.Opens after: Conditionals
9. RecursionLockedA function that solves a problem by calling itself on a smaller version of the same problem, until it reaches a base case.Opens after: Functions in code, Conditionals

Connections to other domains

• Conditionals leads to The yearThe Sky
• Conditionals, level 2 needs Conditional statementsLogic
• Functions in code, level 2 needs FunctionsAlgebra
• Goroutines needs ThreadOperating Systems