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I mean, yeah, maybe that's the reason, I don't know. Still, I see no reason why you'd split features and limitations into two distinct sets. In Rust it's diffi

• high_density 6y ago
  woah another rustacean? hi there! for rust, it counts as a 'feature' because it provides safety guarantee, and they're opt-in (can use unsafe) as for haskell, that immutability also provides guarantee of 'referential-transparency', which the users/libraries can use to their advantange. But in python's case, you have to define the multi-line function *outside* the chaining, and 'forcing to name things' isn't always good (especially for constantly-changing code) def hideEmail(user): return { ...user, email: user.hideEmail? '': user.email, } users.map(hideEmail) // later: def hideEmailAndPhone(user): return { ...user, email: user.hideEmail? '': user.email, phoneNo: ... // same stuff } users.map(hideEmailAndPhone) --- As for JS/TS, you can have 'named-callback-fn': users.map(function hidePrivateFields(user) { ... }) and it's not difficult to come up with 'named-lambda-fn' standard users.map(hidePrivateFields(user) => { ... })