Szathmáry László honlapja @ DEIK | Nim2 / Case insensitive identifier names

Identifiers (variable/procedure names) are case insensitive in Nim, with the exception of the first character. Identifiers start with a lowercase letter, while types' name start with an uppercase letter. But after the first character, identifiers are case insensitive, and the underscore ('_') charcater can be either used or omitted.

let my_name = "Laci"

echo my_name # Laci

echo myName # Laci

echo myname # Laci

echo m_y_n_a_m_e # Laci

#echo MyName # error

Why? Let's say there is a library that uses the camelCase style. However, in your programs you prefer the snake_case style. You can continue using the snake_case style, the compiler will find what you refer to.

import third_party_pkg # it has an isPalindrome() function

let name = "anna"

echo name.is_palindrome() # works

echo name.isPalindrome() # also works

What about the first character?

The first character matters.

type
Dog = object
name: string

let dog = Dog(name: "Dogmeat") # here, dog and Dog are two different things

echo dog # (name: "Dogmeat")