Haskell

Zvirokwazvo! Hechino chinyorwa chako chaunoda.

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Haskell's Cabal package chinhu chakakosha mukusimudzira Haskell. Inogona kushandiswa mukumisikidza mapurojekiti matsva eHaskell, kutonga zvinotsamira uye mapakeji ekuvaka. Iyo inogona zvakare kutora mapakeji kubva kuGithub, ichiita yako yekuvandudza maitiro iite nyore. Cabal igadziriro yekuvaka uye kurongedza Haskell maraibhurari uye zvirongwa. Iyo inotsanangura yakajairika interface yevanyori vezvishandiso uye maraibhurari kuti vataure zvinoenderana nekodhi yavo pane mamwe mapakeji. Chinhu chinoshamisa cheCabal ndechekuti inobatana sei neHackage, muunganidzwa weruzhinji weakavhurika-sosi software yakanyorwa muHaskell.

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Munzvimbo yekushanda kwehurongwa, mepu ibasa rakakosha repamusoro-soro rinoshandisa basa rakapihwa kune chimwe nechimwe chinhu cherunyorwa, ichigadzira runyoro rwezvabuda muhurongwa humwe. Kureruka kune simba kwemepu kunoumba moyo wekushanda kwehurongwa hwekugadzirisa matambudziko, kunyanya mumutauro wakaita se. Haskell.

Tinogona kutsanangura basa remepu muHaskell nekushandisa kudzokorora. Chaizvoizvo, mepu inoshandisa iyo basa kumusoro weiyo rondedzero, uyezve inodzokorora kushandisa mepu kune yasara rondedzero (muswe). Kana runyoro rwusina chinhu, mepu inongodzosa rondedzero isina chinhu. Izvi zvinotungamira kune vanhu vakawanda "dambudziko-> mhinduro" paradigm yekuswedera kumabasa ekuronga, pane iyo iteration-based nzira inowanikwa mumitauro yakakosha.

map _ [] = []
map f (x:xs) = f x : map f xs

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Iyo fashoni yehurongwa yakashanduka zvakanyanya mumakore achangopfuura, uye vanhu vazhinji vakatsamira kune inoshanda hurongwa nekuda kwekureruka kwayo, kushanda nesimba uye kunaka. Mumwe mutauro wakadaro unotungamira ndewe Haskell. Haskell inoshanda chete ine yakasimba static typing uye ine usimbe yekuongorora, iyo inokutendera kuti ushandisezve kodhi yako uye kukudzivirira kubva pakunyora kodhi isina basa. Haskell zvakare inobvumidza iwe kunyora nyore, yakajeka, uye inochengeteka kodhi. Chimwe chezvinhu zvakakosha zvekodha inoshanda kuve neakanaka nharaunda kuseta, uye kune Haskell, chii chingave nani kupfuura Visual Studio Code.

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Chokwadi, ini ndichatsanangura kushandiswa kwechiratidzo chedhora ($) muHaskell nekubatanidza sumo, dambudziko rekugadzirisa, nhanho-ne-nhanho kodhi tsananguro, zvikamu zviviri zvine misoro ine chekuita neHaskell raibhurari kana mabasa akakodzera uye ini ndichaita. shuwa yekunamatira kune zvimwe zvikumbiro zvako zvine chekuita neSEO optimization.

Haskell mutauro wakamisikidzwa, unoshanda wakarongedzerwa une isina kuomarara semantics, yakatumidzwa zita reHaskell Curry. MuHaskell, iyo ($) mushandisi inoshandiswa mukuita basa. Mushandisi pachezvake rinongori basa rinotora chiito uye imwe nharo uye rinoshandisa basa kune nharo. Chinhu chinonakidza nezve mushandisi uyu ndeye yakaderera, yerudyi-inobatanidzwa inosunga yekutanga. Izvi zvinogona kushandiswa kuderedza nhamba yezvibodzwa zvinodikanwa mukutaura.

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Kuisa Stack Haskell muManjaro kunogona kuve rwendo runonakidza. Kunyangwe iwe uri mugadziri weHaskell ane ruzivo, kana kuti uchangotanga kunze, kuve neiyo chaiyo budiriro nharaunda kwakakosha pakufamba kwako. Muchikamu chino, ini ndichakutungamirira kuburikidza nemaitiro ekumisikidza Stack Haskell muManjaro - inonakidza, mushandisi-inoshamwaridzika sisitimu yekushandisa, yakanakira vanogadzira zvirongwa.

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Asingazivikanwe mabasa, inowanzozivikanwa se lambda mabasa, chikamu chakakosha chemitauro inoshanda yekuronga senge Haskell. Kusiyana nemaitiro echinyakare, asingazivikanwe mabasa haana zita. Iwo anotsanangurwa panhunzi uye anowanzo shandiswa kana basa richidikanwa kamwe chete. Ngatinyure mudambudziko rinogona kugadziriswa nemazvo tichishandisa mabasa asingazivikanwe.

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Semugadziri weHaskell ane ruzivo rwakakura mukati meiyo SEO uye fashoni, ini ndinonzwisisa kukosha kwekuunza inoshanda kodhi ine inoyevedza flair. Mafambiro akakosha epasirese ehurongwa anofanana neanoonekwa pane catwalk - echoing kupusa, kuoma, uye hunyanzvi.

Muchadenga chedu cheHaskell, Iyo Interactive Exit inofanana neiyo fashoni yenyika, 'Iyo Duma Rokupfeka' yakaunzwa zvine mukurumbira naCoco Chanel muma1920s. Icho chishandiso mune yedu arsenal iyo, kana yakashandiswa nemazvo, inopa mhinduro kumakumi ezviuru ematambudziko ekuita kodhi.

Zvino, ngatinyure mukugadzirisa dambudziko redu riripo: iyo Interactive Exit.

module Main (main) kupi
import System.Exit

chikuru :: IO ()
chikuru = kuita
putStrLn “Mhoro! Type something ndobva ndasiya."
userInput <- getLine putStrLn ("Iwe wakati: " ++ userInput) exitSuccess [/code]

Kuparadzanisa Yedu Haskell Kutarisa

Yedu Haskell mhinduro, yakafanana neChanel's Little Black Dress, inoyevedza mukureruka kwayo. Inoshandisa mashoma mashoma zvidimbu zvakasanganiswa nenzira yakaoma.

Basa guru rinotanga nechisumo kumushandisi (zvakafanana neakasarudzika ekutanga fungidziro yakaitwa neiyo runway modhi). Basa racho rinobva rakumbira kuisirwa uye rinoribata zvine mutsindo, senge nyanzvi yemuenzaniso inobata nekusashanda kwewadhiropu.

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Zvakanaka, ngatitangei kuti tingawana sei substring mukati metambo muHaskell.

Haskell Mutauro unongoshanda wehurongwa unozivikanwa nehupamhi hwawo hwekubvisa uye kuburitsa syntax. Rimwe basa rinowanzoitwa kana uchibata netambo kutsvaga tambo yediki mukati metambo yakakura - kureva kuti, kuona nzvimbo chaiyo inoteedzana.

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Chokwadi, ini ndakagadzirira kunyora yako Haskell Tuple to Rondedzero chidzidzo. Hezvinoi:

Tuples ndiwo chikamu chakakosha che Haskell programming mutauro. Ivo vanopa nzira iri nyore yekuchengeta akawanda ma values ​​pamwechete muchimiro chimwe, asi kusiyana nemazita, aya hunhu anogona ese emhando dzakasiyana. Nekudaro, dzimwe nguva unogona kuona kuti tuple haisi iyo yakanyanya kunaka chimiro kune zvaunoda, uye iwe ungade kuishandura kuita runyorwa. Ichi chinyorwa chichanyura mukati mekuita sei shandura tuple kuita runyorwa muHaskell.

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