index.md

layout
default

{::options parse_block_html="true" /}

{% include opencol.html size=3 newrow=true %}

Basics

• Variables let, var
• Print print("")
• Comments //
• Optionals ?, !
• Closures (mini)
• Functions func
• Cheatsheet

Control flow

• If • If let • If case let
• Guard guard, guard let
• For-in
• While while, repeat-while
• Switch: case • case let

{% include closecol.html %}{% include opencol.html size=3 %}

Basic types

• Numbers Int, Float
• Booleans Bool
• Tuples (a, b, c)
• Strings
• Enums

Collection types

• Comparison
• Arrays [1, 2, 3]
• Sets Set<Int>
• Dictionaries [:]

Structs & classes

• Structs & classes
• Properties
• Methods
• Inheritance

{% include closecol.html %}{% include opencol.html size=3 %}

Operators

• Assign = += -= *=
• Math + - * / %
• Comparison == != >
• Ternary _ ? _ : _
• Nil-coalescing ??
• Range a...b
• Logical ! && !!
• Identity === !==

Functional

• Comparison
• map
• compactMap
• flatMap
• filter
• reduce
• sorted
• forEach

{% include closecol.html %}{% include opencol.html size=3 %}

Concurrency

• async/await
• @MainActor
• Dispatch
• isMainThread

Advanced

• Errors
• In-out params inout &

Meta

• Swift versions

{% include closecol.html closerow=true %}