Top Tweets for #PatternGuards

about 3 years ago

Après avoir montré un Validator en FP dans une première vidéo, je passe à la seconde qui montre la refacto d'un code legacy vers du FP en simulant un Pattern Guards : https://t.co/1Ts58QvfOU J'espère que ca vous plaira :) @java #FP #refacto #legacy #PatternGuards #lambda

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Dad×3_jack @Iceland_jack

about 5 years ago

@maksbotan @_gilmi I am team #PatternGuards for this reason, minimal indentation, branching, let declaration, pattern matching that can introduce local constraints foo :: forall a. Typeable a => a foo | App f _ <- TypeRep @a , Just HRefl <- eqTypeRep (TypeRep @[]) f = []

Mazlum Tosun 💙 #GCP @MazlumTosun3

over 5 years ago

I wrote a code on Github with legacy code designs, revisited with FP in @java 14 : (@GroupBees1 demo) #validator #decorator #patternGuards #factory For all the classes, i show the legacy code and the refacto with FP. #java14 #record #FP https://t.co/CepJvXWbAP

Dad×3_jack @Iceland_jack

about 7 years ago

@josecalderon @tomaspetricek In Haskell, with the former I can also introduce #PatternGuards for let bindings, guards or bring local constraints into scope

Mazlum Tosun 💙 #GCP @MazlumTosun3

about 7 years ago

I work on my first project with @scala_lang and i admit that is a great programming language #FP #Monad #Option #Try #Either #Tuple #PatternMatching #PatternGuards #CaseClasses ....

Dad×3_jack @Iceland_jack

over 7 years ago

when I'm writing map (\a -> ..) & need guards (also useful for bringing constraints into local scope!) I don't think to write map (\case a | .. -> ..) because I'm not case-ing on 'a', I just hijack its #PatternGuards. Would I actually prefer map (\a | .. -> ..) who knows

$Iceland_jack's tweet photo. when I'm writing map (\a -> ..) & need guards (also useful for bringing constraints into local scope!) I don't think to write map (\case a | .. -> ..) because I'm not case-ing on 'a', I just hijack its #PatternGuards. Would I actually prefer map (\a | .. -> ..) who knows https://t.co/2AgETz5xTT$

Dad×3_jack @Iceland_jack

over 7 years ago

@emi1ypi @whyevernotso It's the #PatternGuards syntax foo a | a < 0 = .. | otherwise = .. which allows let bindings ('| let' is incidentally a drop in replacement for '| otherwise'), all of these let binding are accepts:

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