小编ovh*_*aag的帖子

我试着清理我的代码.第一个版本使用each_with_index.在第二个版本中,我试图用Enumerable.inject_with_index-construct我在这里找到的代码压缩代码.

它现在有效,但在我看来像第一个代码一样模糊.添加更糟糕我不明白元素周围的括号,索引

.. .inject(groups) do |group_container, (element,index)|

但他们是必要的

• 这些括号有什么用？
• 如何使代码清晰可读？

第一版 - 带"each_with_index"

class Array

  # splits as good as possible to groups of same size
  # elements are sorted. I.e. low elements go to the first group,
  # and high elements to the last group
  # 
  # the default for number_of_groups is 4 
  # because the intended use case is
  # splitting statistic data in 4 quartiles
  # 
  # a = [1, 8, …

我的gnuplot安装失败,因为无法加载libjpeg.

$ gnuplot
dyld: Library not loaded: /usr/local/lib/libjpeg.8.dylib
  Referenced from: /usr/local/bin/gnuplot
  Reason: image not found
Trace/BPT trap: 5

我使用osx-mavericks + XCode 5.1.Gnuplot最初是在自制的 osx-mountain-lion下安装的.在山狮下它起作用了.我试图在小牛队下重新安装它,但它没有帮助.

brew reinstall gnuplot --tests
==> Reinstalling gnuplot with --tests
..
==> make
==> make check
  Reason: image not found
/bin/sh: line 1: 30700 Trace/BPT trap: 5       PATH=$bdir/../src:$PATH GNUPLOT_DRIVER_DIR=$bdir/../src GNUPLOT_LIB=. gnuplot all.dem < /dev/null
make[2]: *** [check-noninteractive] Error 133
make[1]: *** [check-am] Error 2
make: *** [check-recursive] Error 1

附加信息:brew install libjpeg说"jpeg-8d已安装",但我找不到libjpeg.我只找到了几个版本的libpng.

$ brew install …