小编Lam*_*dan的帖子

为什么在Haskell函数应用程序中使用逗号会导致不同的类型?

我在ghci中运行了这些haskell函数,然后获得了那些输出,但我不知道如何解释它.g(x,y)和g(xy)之间有什么区别以及输出的产量.

*Main> let  j g (x, y) = g(x,y)
*Main> :t j
j :: ((a, b) -> t) -> (a, b) -> t

*Main> let  j g (x, y) = g(x y)
*Main> :t j
j :: (t1 -> t2) -> (t3 -> t1, t3) -> t2
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haskell

2
推荐指数
2
解决办法
305
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如何在tesseract OCR中安装语言

我已经安装了tesseract OCR,它在语言列表中只有'eng'和'osd'。我需要德语。我厌倦了命令

brew install tesseract-ocr-deu
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但是我遇到了错误。

Error: No available formula with the name "tesseract-ocr-deu" 
==> Searching for a previously deleted formula (in the last month)...
Warning: homebrew/core is shallow clone. To get complete history run:
   git -C "$(brew --repo homebrew/core)" fetch --unshallow

Error: No previously deleted formula found.
==> Searching for similarly named formulae...
Error: No similarly named formulae found.
==> Searching taps...
==> Searching taps on GitHub...
Error: No formulae found in taps.
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ocr tesseract

2
推荐指数
5
解决办法
4673
查看次数

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haskell ×1

ocr ×1

tesseract ×1