Currently:
Undo local changes with the last content in head
git checkout -- <file_name>
Should be:
Undo local changes with the content in index(staging)
git checkout -- <file_name>

Reference: https://git-scm.com/docs/git-checkout
Examples: git checkout hello.c
restore hello.c from the index

You should add a tip on little known (or remembered) CSS Counters i believe.

It is supported on all major platforms, http://caniuse.com/#feat=css-counters

Here is an example: http://codepen.io/Monochrome/pen/bEMbdr

I had a journal request that your final PDF should not contain Type 1 fonts and in my case the culprit were matplotlib figures. I found that with this setting in ~/.config/matplotlib/matplotlibrc
you can make matplotlib avoid Type 1 fonts:

ps.useafm : True
pdf.use14corefonts : True
text.usetex : True

Maybe you consider this useful and can add it here somewhere.

LZ第一个要说的，就是心态！

原因很简单，文章下面即将提到的学习内容，如果你没有一个好的心态，是不可能进行下去的。所以，先过了心态这一关，再来谈别的吧，否则你肯定会死在半路上的。

说起来，很多群里的新人都爱问LZ，“你是怎么学习的？为什么我学不进去呢？为什么我一看书就困呢？”

以上这种现象，基本上就是两个原因，第一个原因是心态浮躁，总觉得看书好像没啥用啊，看了好像还是觉得没学到什么，过不了多久就忘了。第二个原因则是目标感不强，不知道自己要达到什么程度才算可以，所以也就干脆“一瓶子不满，半瓶子晃荡”了。

针对第一个原因，说到底就是个心态问题。总想着看书能够立竿见影，从菜鸟一下子蜕变为大神，如果你老是抱着这样的心态去看书，你特么不瞌睡才是邪门了。

而第二个原因，LZ觉得有时候人要适当的激发内心的欲望，无欲无求这种高逼格的事，等你七老八十了再说，现在趁着年轻，心中有

In your example when you remove the ink it still has the same behavior.

a better example would be the one from the docs

Material(
  color: Colors.teal[900],
  child: Center(
    child: Ink(
      color: Colors.yellow,
      width: 200.0,
      height: 100.0,
      child: InkWell(
        onTap: () { /* ... */ },
        child: Center(
          child: Text('YELLOW'),
        

Today I was doing a lot of changes on some variables in a deep hierarchy.

Current Pharo tools allow developers to find accesses to a variable in a class but not in a hierarchy so I had to make this snippet:

origin := AbstractWidgetPresenter.
variableName := #borderColor.
(origin slots detect: [ :e | e name = variableName ]) usingMethods collect: #methodClass as: Set