Stellar is a header-only C++23 library that provides a curated set of professional string, collection, async, and text-building utilities under the ste:: namespace, designed for modern, high-performance applications.

Every hot path is single-pass and pre-reserves its output buffer, so the common operations allocate exactly once (for the returned std::string) and often outperform the equivalent std::regex / multi-pass solution by an order of magnitude — see the benchmark results below.

#include <ste/ste.hpp>

ste::str s{"  my AWESOME variable name  "};
s.NormalizeSpaces().ToPascalCase();   // → "MyAwesomeVariableName"
ste::ToSlug("Hello, World! 100%");    // → "hello-world-100"

• Namespace ste:: — every public symbol lives here.
• Two calling styles — free functions over std::string_view for peak performance, or fluent ste::str (a thin std::string subclass) for .Method() chaining.
• Header-only, C++23, no third-party runtime deps.
• Zero regex in hot paths — state machines for NormalizeSpaces, ToSlug, StripTags, ReplaceAll, etc.
• Async tier — both std::future<T> (Task-like) and a C++20 coroutine ste::Task<T> suitable for co_await.
• GoogleTest suite for every public function.
• Google Benchmark comparing naive C++ (regex / multi-pass) vs. the optimized ste:: version.

This repo is a vcpkg registry. Add it to your vcpkg-configuration.json:

{
  "default-registry": {
    "kind": "git",
    "baseline": "<microsoft/vcpkg commit sha>",
    "repository": "https://github.com/microsoft/vcpkg"
  },
  "registries": [
    {
      "kind": "git",
      "repository": "https://github.com/stescobedo92/stellar",
      "baseline": "<commit sha of master>",
      "reference": "master",
      "packages": [ "stellar" ]
    }
  ]
}

Then vcpkg install stellar works out of the box.

vcpkg install stellar

conan install --requires=stellar/0.1.0 --build=missing

The recipe is published to Conan Center (or your own Artifactory remote — see the publish-conan workflow).

include(FetchContent)
FetchContent_Declare(stellar
    GIT_REPOSITORY https://github.com/stescobedo92/stellar.git
    GIT_TAG v0.1.0
)
FetchContent_MakeAvailable(stellar)
target_link_libraries(my_app PRIVATE stellar::stellar)

# From the stellar/ directory:
cmake --preset default
cmake --build --preset default -j

# Run tests
ctest --preset default

# Run benchmarks
./build/default/benchmarks/stellar_bench

Requires a C++23 compiler (GCC ≥ 13, Clang ≥ 17, MSVC ≥ 19.38 / VS 2022 17.8).

Naive ≈ what most code bases do: std::regex_replace, multi-pass, no buffer reservation.

(Numbers are illustrative; run stellar_bench on your machine for exact figures.)

MIT — see LICENSE.