xtl ☆

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Description:
X template library

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Developer tools

Tags: c++ header-only template-metaprogramming library development

Install: brew install xtl

About:
xtl is a header-only C++ library that provides foundational tools for template metaprogramming. It offers extended type traits, compile-time checks, and utilities for handling variant types and expression templates. Its primary value is enabling the development of high-performance, generic libraries by simplifying complex template logic.

Key Features:

Header-only library with no external dependencies
Extended type traits and compile-time utilities
Tools for building expression templates and variant types
Lightweight and focused on core functionality

Use Cases:

Building generic, high-performance C++ libraries
Implementing complex template metaprogramming patterns
Creating domain-specific embedded languages (DSLs)

Alternatives:

Boost.Hana – Hana is a full metaprogramming library for types and values, while xtl is more focused on foundational utilities for traits and expression templates.
Boost.MPL – MPL is an older, C++03-style metaprogramming library, whereas xtl is modern, header-only, and designed for performance.

Version History

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