Haskell：Data.Numbers.Primes库在哪里？ [英] Haskell: where is Data.Numbers.Primes library?

问题描述

我尝试导入Data.Numbers.Primes

  import Data.Numbers.Primes 
  
 
 
  5。 hs：1：8：
无法找到模块`Data.Numbers.Primes'
使用-v查看搜索的文件列表。 
  
 ghci给了我： 
 
 
 <无位置信息>：
无法找到模块'Data.Numbers.Primes'
它不是当前程序或任何已知软件包中的模块。 
  
我试图通过cabal安装Data.Numbers.Primes，但我得到了：
  cabal update 
 ... 
 cabal install数据
 cabal：没有名为'Data'的软件包。 
您可能需要运行'cabal update'以获取可用的
软件包的最新列表。 
 cabal install Data.Numbers.Primes 
 cabal：文件不存在'Data.Numbers.Primes'。 
  
帮助？
解决方案
您正在查找的包名为 素数 。
 
 
 
没有规定该包将被称为顶级模块名称。通常情况下，软件包会将自己放在任何有意义的地方，但这非常随意。如有疑问， Hackage搜索有帮助。
 
I tried importing Data.Numbers.Primes
import Data.Numbers.Primes
runhaskell gave me:
5.hs:1:8:
    Could not find module `Data.Numbers.Primes'
    Use -v to see a list of the files searched for.
ghci gave me:
<no location info>:
    Could not find module `Data.Numbers.Primes'
    It is not a module in the current program, or in any known package.
I tried to install Data.Numbers.Primes through cabal, but I got:
cabal update
...
cabal install Data
cabal: There is no package named 'Data'.
You may need to run 'cabal update' to get the latest list of available
packages.
cabal install Data.Numbers.Primes
cabal: The file does not exist 'Data.Numbers.Primes'.
help?
解决方案
The package you're looking for is called primes.

There's no rule that the package will be called as it's top-level module name. Typically, packages put themselves under whatever makes sense, but that's pretty much arbitrary. When in doubt, Hackage search helps.

                        
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