nim

  • 26th September 2021

Competitive programming in Nim

nim

Updated in 2022-10.

In the afternoon, I came cross the Nim programming language again on Lobsters. I first learned some basics of the language in 2015, but had not touched it since then.

"Nim is a statically typed compiled systems programming language. It combines successful concepts from mature languages like Python, Ada and Modula.", according to its website.

Basic features: parametric polymorphism. Advanced features: macros (including term-rewriting macros), compile-time function execution, effect system, concepts

An idea popped into my mind: why not solve some coding challenges in Nim?

As a niche language, it is not supported on many coding challenge websites. Fortunately, the Nim compiler generates C code. With a small amount of work, we can build a self-contained C source file suitable for submission.

Let's take a LeetCode challenge as an example. We write the main algorithm in Nim and use the emit pragma to write a C wrapper.

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