| foreign import ccall unsafe "read" c_read :: CInt -> Ptr () -> CSize -> IO CSsize | |
| read :: Int -- ^ file descriptor | |
| -> Int64 -- ^ Bytes to allocate | |
| -> Word64 -- ^ Read upto this many bytes | |
| -> IO (ByteString, Int64) | |
| read fd bytes len = do | |
| (ptr :: Ptr ()) <- mallocBytes (fromIntegral bytes) | |
| size <- c_read (fromIntegral fd) ptr (fromIntegral len) | |
| bstring <- packCString (castPtr ptr) |
| using System; | |
| using System.Linq; | |
| using NuGet; | |
| namespace NuGetListNamespace | |
| { | |
| class NuGetList | |
| { | |
| static void Main(string[] args) | |
| { |
Программу установил с помощью пакетного менеджера chocolatey.
choco.exe install haskell-stack
Сразу же выставил системную переменную STACK_ROOT в корень диска, как рекомендуют в руководстве по установке.
При запуске stack init консоль надолго задумалась:
This is my attempt to give Scala newcomers a quick-and-easy rundown to the prerequisite steps they need to a) try Scala, and b) get a standard project up and running on their machine. I'm not going to talk about the language at all; there are plenty of better resources a google search away. This is just focused on the prerequisite tooling and machine setup. I will not be assuming you have any background in JVM languages. So if you're coming from Python, Ruby, JavaScript, Haskell, or anywhere… I hope to present the information you need without assuming anything.
Disclaimer It has been over a decade since I was new to Scala, and when I was new to Scala, I was coming from a Java and Ruby background. This has probably caused me to unknowingly make some assumptions. Please feel free to call me out in comments/tweets!
One assumption I'm knowingly making is that you're on a Unix-like platform. Sorry, Windows users.
| data PushdownAutomaton a b = | |
| Automaton { currentState :: Int | |
| , stack :: [b] | |
| , transitions :: [((Int, Maybe a, Maybe b), [(Int, Maybe b)])] | |
| , acceptStates :: [Int] | |
| } | |
| checkMaybe m h = if m == Nothing then True else m == Just h | |
| eval :: (Eq a, Show a, Eq b) => PushdownAutomaton a b -> [a] -> Bool |
| // STL - Standard Template Library | |
| #include <vector> | |
| #include <iostream> | |
| using namespace std; | |
| int main(int argc, char *argv[]) | |
| { | |
| vector<int> vet; |
| module Program | |
| open System | |
| open System.Collections.Generic | |
| open System.Threading.Tasks | |
| /// https://www.nuget.org/packages/BenchmarkDotNet/ | |
| /// https://www.nuget.org/packages/BenchmarkDotNet.Diagnostics.Windows/ | |
| open BenchmarkDotNet.Attributes |
| object ReaderExample { | |
| import scalaz.Monad | |
| import scalaz.syntax.monad._ | |
| type AccountId = Int | |
| type Account = Int | |
| type BetId = Int | |
| type Bet = Int | |
| final case class Config( |
As has become a bit of a tradition of mine, I'm writing up a Gist to cover a controversial topic instead of putting it on my blog. Motivation: I want to get down my thoughts in just one place to link people to, but I don't want to give a silly debate more publicity by adding it to my blog archive, Planet Haskell, and so on.
tl;dr: Each time FP Complete has made a supposed "grab for power," the reality is very simple:
