run.dlang.io - a modern way to run D code

[Meta]

On Tuesday, 12 December 2017 at 18:37:38 UTC, Seb wrote:
> After it has been in stealth mode for quite a while, I'm happy 
> to announce that there's https://run.dlang.io
>
> === Features ===
>
> * Color-highlighted DMD errors
> * Format source code with dfmt
> * Generate a short URL for link sharing
> * Import/Export to GitHub Gist
> * Typical key shortcuts like CTRL+Enter -> Run
> * Build cache for fast execution of common examples (e.g. the 
> ones on front page of dlang.org)
> * Usable on your phone
> * Integrated with dlang.org (you can open any example on 
> dlang.org in run.dlang.io by clicking the right arrow button)
> * Integrated with tour.dlang.org (you can open any example on 
> the DTour in run.dlang.io by clicking on the "Export" button)
>
> === Supported D Compilers ===
>
> * Latest DMD nightly
> * Latest DMD beta
> * Latest DMD
> * Latest LDC beta
> * Latest LDC
>
> The Docker images are rebuilt every day automatically.
>
> === Running DUB packages ===
>
> Via "Add library" DUB packages can be added to the build.
> Currently only a whitelist of packages is allowed.
> Examples:
>
> mir: https://run.dlang.io/is/FIc6rd
> mir-algorithm: https://run.dlang.io/is/3pNRH8
>
> === DReg ===
>
> When I watched CyberShadow's Bugzilla cruise [1] I spotted this 
> amazing tool dreg [2] and it's not that hard to build a docker 
> image [3] for it and make it available for everyone, s.t. no 
> setup is required.
> Dreg allows running old versions of the D compiler in parallel 
> and compares their output.
> However, it's a lot easier to show than to explain:
>
> https://run.dlang.io/is/ckNT9i
> https://run.dlang.io/is/UZhQDh
>
> Currently all versions from 2.060 up to the latest greatest 
> 2.077.1 are run, so the execution will take a bit longer than a 
> single run.
>
> [1] https://youtu.be/qpUTvMokTCs
> [2] https://github.com/CyberShadow/misc/blob/master/dreg.d
> [3] https://github.com/dlang-tour/core-dreg
>
>
> === Source code & report issues ===
>
> Please don't hesitate to open issues or submit pull requests:
>
> -> https://github.com/dlang-tour/core
>
> (it uses Vibe.d)

This is a real life saver considering dpaste is blocked at work. 
It gets very tedious having to create a file, invoke the 
compiler, and run it in 3 separate steps just to test out some 
quick snippet.