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Why Haskell?
Haskell is a great programming language with many features that make it easier to write robust software, and yet it is rarely taken up by software engineering teams. This essay aims to explain my views as to why Haskell is a great choice for programmers.
Some of those have the same characteristics as Haskell, like Rust’s pattern matching, which is exhaustive and enforced by the compiler, whereas some are quite different, especially in gradually-typed languages like Typescript and Python, where there is no guarantee that this sort of safety permeates the codebase, and there are often escape-hatches, because you are using optional tools external to the built-in toolchain. It can be hard to explain just how radically these things transform the way one constructs programmes without experiencing them, but to take a small example, the Haskell ecosystem has a tool called “Hoogle” which allows one to search for functions by type signature. Algebraic data types and typeclasses (and other, similar mechanics which deal with various polymorphisms) allow us to construct our own domain-specific languages within Haskell with which to write our programmes, while building upon common, well-established concepts to do so.
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