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ruicc 2024/11/07
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Feature Toggles (aka Feature Flags)
Feature Toggles (often also refered to as Feature Flags) are a powerful technique, allowing teams to modify system behavior without changing code. They fall into various usage categories, and it's important to take that categorization into account when implementing and managing toggles. Toggles introduce complexity. We can keep that complexity in check by using smart toggle implementation practice
ruicc 2024/04/16
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ruicc 2023/09/27
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ZuriHac 2023 and GHC Contributors' Workshop: Summary and Materials
ruicc 2023/09/19
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Async Rust Is A Bad Language
But to get at whatever the hell I mean by that, we need to talk about why async Rust exists in the first place. Letâ€™s talk about: Modern Concurrency: Theyâ€™re Green, Theyâ€™re Mean, & They Ate My Machine Suppose we want our code to go fast. We have two big probl ems to solve: We want to use the whole computer. Code runs on CPUs, and in 2023, even my phone has eight of the damn things. If I want to use
ruicc 2023/09/17
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Memory Fragmentation: A Deeper Look With ghc-debug
In a previous post, David explained how he analysed a memory usage issue which turned out to be caused by fragmentation. At the time of writing the exact cause of the fragmentation was unknown and difficult to analyse. The only thing that we could work out was the extent of the probl em without formulating a strategy to fix it. In this post we will report on our progress implementing ghc-debug, a t
ruicc 2021/02/02
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Phil Wadler: Featherweight Go
We describe a design for generics in Go inspired by previous work on Featherweight Java by Igarashi, Pierce, and Wadler. Whereas subtyping in Java is nominal, in Go it is structural, and whereas generics in Java are defined via erasure, in Go we use monomorphisation. Although monomorphisation is used widely, we are one of the first to formalise it. Our design also supports a solution to The Expres
ruicc 2020/06/09
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ã”ã¿é›†ã‚ã®ãªã„ (é ã®æ‚ªã„) LISP
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ruicc 2020/05/19
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Lessons in Managing Haskell Memory
At Channable, we process several billion product data records for our customers every day according to user-customizable rules. Internally, this work is subdivided into jobs, where one job takes a set of products and the rules for how to process them as input, and returns the transf ormed set of products as output. Those datasets range from a few dozen to tens of millions of products in size. The a
ruicc 2020/04/08
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ruicc 2019/10/03
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ruicc 2019/09/27
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ruicc 2019/09/10
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https://elpinal.gitlab.io/publications/static_interpretation_of_modules.pdf
ruicc 2019/02/19
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Pointers Are Complicated, or: What's in a Byte?
This summer, I am again working on Rust full-time, and again I will work (amongst other things) on a â€œmemory modelâ€ for Rust/MIR. However, before I can talk about the ideas I have for this year, I have to finally take the time and dispel the myth that â€œpointers are simple: they are just integersâ€. Both parts of this statement are false, at least in languages with unsafe features like Rust or C: Po
ruicc 2019/01/30
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ruicc 2018/12/26
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ruicc 2018/12/26
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RAII is better than the bracket pattern
RAII is better than the bracket pattern Published October 8, 2018 I recently wrote an FP Complete blog post entitled ResourceT: A necessary evil. I had a line in that post I wanted to expand upon: I believe this is an area where the RAII (Resource Acquisition Is Initialization) approach in both C++ and Rust leads to a nicer solution than even our bracket pattern in Haskell, by (mostly) avoiding th
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