Variables are the way to store values we discussed earlier. In order to create a variable you can use a let keyword. Here is an example:

let name = "John"

The above example shows how to initialize a variable. However if you have already created the one you want, you can reassign it just by name (without using any keywords)

name = "Rob"

And to access the value stored by this variable - just refer to it by name, like so:

echo name // Outputs: "Rob"

The Amber compiler reserves all identifiers starting with double underscore __ in addition to keywords like let, if, etc.

Variable declarations in Amber can be overshadowed, allowing the redeclaration of an existing variable with a different data type within a specific scope if necessary. Here’s an example:

// `result` is a `Num`
let result = 123
// `result` is a `Text`
let result = "Hello my friend"

Constant is a type of variable that cannot be modified.

const sunrise = "east"
sunrise = "west" // ERROR: Cannot reassign constant 'sunrise'