Running the following solved the problem:

`rm ~/.zcompdump*`

Note: The * is incase there are multiple .zcompdump files.

Sometime there is also &lt;code&gt;~/.zcompdump-&amp;lt;COMPUTER NAME&amp;gt;-&amp;lt;VERSION&amp;gt;&lt;/code&gt; file, so use:

&lt;pre&gt;
rm -f ~/.zcompdump&lt;strong&gt;*&lt;/strong&gt;
&lt;/pre&gt;


To disable the `.zcompdump*` file(s), you could look in your `.zshrc` (or `/etc/zsh/* files`) for `compinit` and add the `-D` flag. 

This might be better than creating the files and deleting them at every login.

(source: http://www.csse.uwa.edu.au/programming/linux/zsh-doc/zsh_23.html)

My problem persisted even after the `compinit -D` and `rm -f ~/.zcompdump*`. I found [this github issue][1] and checked my .zplug directory and sure enough found some non-hidden zcompdump files (no preceding &#39;.&#39;). Deleted those and I was good to go. If you&#39;re using a zsh plugin manager like zgen or zplug, check their directories.


  [1]: http://github.com/robbyrussell/oh-my-zsh/issues/4787

Add rm -f ~/.zcompdump{,.zwc} to .zlogin to automate it

I&#39;m developing android applications for a while,  and followed a lot of posts about activity life cycle, and application&#39;s life cycle.

I know `Activity.finish()` method calls somewhere in the way to `Activity.onDestroy()`, and also removing the activity from stack, and I guess it somehow points to operating system and garbage collector that he can &quot;do his trick&quot; and free the memory when it find it a good time doing so....      

I came to this post - 
https://stackoverflow.com/questions/2033914/quitting-an-application-is-that-frowned-upon/2034238 and read Mark Murphy&#39;s answer.

It made me a bit confused about what exactly the `finish()` method actually does.

Is there a chance I&#39;ll call `finish()` and `onDestroy()` won&#39;t be called?

What is Activity.finish() method doing exactly?

EVERY SINGLE TIME I view an object in the console I am going to want to expand it, so it gets tiresome to have to click the arrow to do this EVERY SINGLE TIME :)  Is there a shortcut or setting to have this done automatically?

Is there a way to auto expand objects in Chrome Dev Tools?

When using the latest ZSH and RVM on Mac OS X 10.7.4 ZSH complains about this:

`__rvm_cleanse_variables: function definition file not found`

ZSH complains about RVM __rvm_cleanse_variables: function definition file not found

<p>When using the latest ZSH and RVM on Mac OS X 10.7.4 ZSH complains about this:</p>
<p><code>__rvm_cleanse_variables: function definition file not found</code></p>


I use Sublime Text 2 but it won&#39;t let me enter any value when my code asks for user input. (In other words: `input()` in Python and `gets` in Ruby fail to correctly prompt me for input).

Python throws an `EOFError` error (what you get when user doesn&#39;t enter anything).

Simply USER INPUT isn&#39;t working in Sublime Text 2 for me.

EDIT: FOR EXAMPLE

    try:
        text = input(&#39;Enter something: &#39;)
        print text
    except EOFError:
        print(&#39;\nEOFError&#39;)

    =&gt; Enter something: #cannot enter anything to var &quot;text&quot;
    =&gt; EOFError
    =&gt; [Finished]

Sublime Text 2 console input

For example, `str = &#39;abcdefg&#39;`. How do I find the index if `c` in this string using Ruby?

How do I find the index of a character in a string in Ruby?

It is known that in Ruby, class methods get inherited:

    class P
      def self.mm; puts &#39;abc&#39; end
    end
    class Q &lt; P; end
    Q.mm # works

However, it comes as a surprise to me that it does not work with mixins:

    module M
      def self.mm; puts &#39;mixin&#39; end
    end
    class N; include M end
    M.mm # works
    N.mm # does not work!

I know that #extend method can do this:

    module X; def mm; puts &#39;extender&#39; end end
    Y = Class.new.extend X
    X.mm # works

But I am writing a mixin (or, rather, would like to write) containing both instance methods and class methods:

    module Common
      def self.class_method; puts &quot;class method here&quot; end
      def instance_method; puts &quot;instance method here&quot; end
    end

Now what I would like to do is this:

    class A; include Common
      # custom part for A
    end
    class B; include Common
      # custom part for B
    end

I want A, B inherit both instance and class methods from `Common` module. But, of course, that does not work. So, isn&#39;t there a secret way of making this inheritance work from a single module?

It seems inelegant to me to split this into two different modules, one to include, the other to extend. Another possible solution would be to use a class `Common` instead of a module. But this is just a workaround. (What if there are two sets of common functionalities `Common1` and `Common2` and we really need to have mixins?) Is there any deep reason why class method inheritance does not work from mixins?

Inheriting class methods from modules / mixins in Ruby

Most of the blogs or tutorials or books have private methods at the bottom of any class/module. Is this the best practice?

I find having private methods as and when necessary more convenient. For example:

    public
    def my_method
      # do something
      minion_method
    end

    private
    def minion_method
      # do something
    end

    public
    def next_method
    end

This way I find the code more readable instead of scrolling up and down continuously which is very irritating.

Is there something terribly wrong in this approach? Is having private methods at the bottom not just a best practice and something else?

Where to place private methods in Ruby?

I&#39;m having some trouble installing jekyll. Can&#39;t quite figure out how to patch the missing link. I think it&#39;s an update to Ruby, but RVM is having trouble installing alternate versions of ruby as well. 

Heres the full post:


    $ sudo gem install jekyll    

    ERROR:  Error installing jekyll:
	ERROR: Failed to build gem native extension.

        /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb
    mkmf.rb can&#39;t find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ruby.h


    Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/fast-stemmer-1.0.1 for inspection.
    Results logged to /Library/Ruby/Gems/1.8/gems/fast-stemmer-1.0.1/ext/gem_make.out

Does this mean I need to update the version of ruby I&#39;m using via rvm?

Error Installing Jekyll - Native Extension Build

I access a sever over ssh on which I run vim for editing files. When I try to yank text from vim into an editor locally on my mac (lion) either with y OR &quot;+y it does not work. I end up with the text I copied last locally. It does work if I just use p within vim alright.

vim + COPY + mac over SSH

I have a problem generating a iOS App archive from an application. The application compiles just fine and even works in the simulator. Now I wanted to make som ad hoc testing and cannot generate the iOS App Archive. When I click on the Product -&gt; Archive  it generates a generic xcode archive. Can anyone help me. I should mention, that I have already generated an iOS App Archive of this application. It has just stopped to generate iOS Archive for some reason. Thanks a lot.

Cannot generate iOS App archive in xcode

I have a file of strings that are comma separated.  I&#39;m trying to replace the commas with a new line.  I&#39;ve tried:

    sed &#39;s/,/\n/g&#39; file

but it is not working.  What am I missing?

Replace comma with newline in sed on MacOS?

I&#39;m trying to follow along [this tutorial](http://www.cyberciti.biz/tips/how-do-i-enable-remote-access-to-mysql-database-server.html) to enable remote access to MySQL. The problem is, where should `my.cnf` file be located? I&#39;m using Mac OS X Lion.

Location of my.cnf file on macOS

I know that when using `gem install`, the gem will be stored under /home/username/.rvm/gems/, under which gemset the gem was installed.

But if I use Bundler and specify the gem in the Gemfile, when I run bundle install, where will those gems be stored? And what if I already installed the gem using `gem install`, if I run bundle install, will it use the previous gem installed using `gem install`?

Where does bundler store gems?

After update to Mountain Lion, I tried install 1.8.7, and I got  error. X11 file not found, I installed Xquarkz, but nothing changed. Whats wrong?

    Fail to find [tclConfig.sh, tkConfig.sh]
    Use MacOS X Frameworks.
    
    Find Tcl/Tk libraries. Make tcltklib.so which is required by Ruby/Tk.
    clang -I. -I../.. -I../../. -I../.././ext/tk -DHAVE_RB_SAFE_LEVEL -DHAVE_RB_HASH_LOOKUP -DHAVE_RB_PROC_NEW -DHAVE_RB_OBJ_TAINT -DHAVE_ST_PTR -DHAVE_ST_LEN -DRUBY_VERSION=\&quot;1.8.7\&quot; -DRUBY_RELEASE_DATE=\&quot;2012-06-29\&quot;  -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE   -DWITH_TCL_ENABLE_THREAD=0 -fno-common -g -O2  -fno-common -pipe -fno-common   -c stubs.c
    In file included from stubs.c:10:
    /usr/include/tk.h:78:11: fatal error: &#39;X11/Xlib.h&#39; file not found
    #       include &lt;X11/Xlib.h&gt;
                    ^
    1 error generated.
    make[1]: *** [stubs.o] Error 1
    make: *** [all] Error 1

Mountain Lion rvm install 1.8.7 x11 error

Really, I don&#39;t know what happened. Excuse me if this question is so NOOB, but I can&#39;t find the solution for this problem.

&gt;-bash: rvm: command not found

I tried this

&gt;curl -L https://get.rvm.io | bash -s -- --version latest 

but still nothing I need to see the ruby version for use the simplecov because it not works with older version from 1.9 

rvm: command not found MAC OX

I have seen other people with the same issue of [installing RMagick on Mountain Lion](https://stackoverflow.com/questions/11676844/issue-with-installing-imagemagick-and-rmagick-on-mountain-lion) However none of the suggested solutions have allowed me to successfully install rmagick. 

Here is the error message I am getting:

    Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
    checking for Ruby version &gt;= 1.8.5... yes
    checking for /usr/local/bin/gcc-4.2... yes
    checking for Magick-config... yes
    checking for ImageMagick version &gt;= 6.4.9... yes
    checking for HDRI disabled version of ImageMagick... yes
    checking for stdint.h... yes
    checking for sys/types.h... yes
    checking for wand/MagickWand.h... yes
    checking for InitializeMagick() in -lMagickCore... no
    checking for InitializeMagick() in -lMagick... no
    checking for InitializeMagick() in -lMagick++... no
    Can&#39;t install RMagick 2.13.1. Can&#39;t find the ImageMagick library or one of the dependent    libraries. Check the mkmf.log file for more detailed information.

    *** extconf.rb failed ***
    Could not create Makefile due to some reason, probably lack of
    necessary libraries and/or headers.  Check the mkmf.log file for more
    details.  You may need configuration options.

Things I have done:

    Installed XCode
    Installed the command line tools
    Installed XQuartz
    Installed homebrew with imagemagick library
    Installed most recent version of RVM
    Symlinked GCC
    Uninstalled and reinstalled both RVM and imagemagick


Any ideas why I still can&#39;t download rmagick?

Error installing Rmagick on Mountain Lion

In OS X in rvm how do I check if openssl is configured properly?
I get the `cannot load such file -- openssl (LoadError)`
And I have tried everything in https://stackoverflow.com/questions/3464098/rails-3-no-such-file-to-load-openssl with no success.

cannot load such file -- openssl (LoadError)

Every time I open up terminal on a Mac I get the prompt 

&gt; Would you like to check for updates?

I find it quite annoying. Anyway to stop it from doing so?


Oh My Zsh - Disable &#39;Would you like to check for updates&#39; prompt

How do I show the definition of a function in zsh? `type foo` doesn&#39;t give the definition.&lt;p&gt;
In bash:

    bash$ function foo() { echo hello; }

    bash$ foo
    hello

    bash$ type foo
    foo is a function
    foo () 
    { 
        echo hello
    }

In zsh:

    zsh$ function foo() { echo hello; }

    zsh$ foo
    hello

    zsh$ type foo
    foo is a shell function

How to show zsh function definition (like bash &quot;type myfunc&quot;)?

I&#39;m using zsh terminal, and I&#39;m trying to add a new entry (`/home/david/pear/bin`) to the `PATH` variable. I don&#39;t see a reference to the `PATH` variable in my `~/.zshrc` file, but doing `echo $PATH` returns:

    /usr/lib/lightdm/lightdm:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games

So I know that the path variable is being set somewhere.  Where is the `PATH` variable set / modified for the zsh terminal?


Adding a new entry to the PATH variable in ZSH

I switched quite recently from Bash to Zsh on Ubuntu and I&#39;m quite happy about it. However, there is something I really miss and I did not find how to achieve the same thing.

In Bash, whenever I was typing a long command and noticed I had to run something else before, I just had to comment it out like in the following:

    me@home&gt; #mysuperlongcommand with some arguments
    me@home&gt; thecommandIhavetorunfirst #and then: then up up
    me@home&gt; #mysuperlongcommand with some arguments #I just need to uncomment it!

However, this quite recurrent situation is not as easy to address as with `zsh`, given `#mysuperlongcommand` will be run as such (and resulting in: `zsh: command not found: #mysuperlongcommand`.

Comments in command-line Zsh

I just recently switched from bash to zsh, however I miss my &lt;kbd&gt;Alt&lt;/kbd&gt;+&lt;kbd&gt;LeftArrowKey&lt;/kbd&gt; and &lt;kbd&gt;Alt&lt;/kbd&gt;+&lt;kbd&gt;RightArrowKey&lt;/kbd&gt; to go back and forth a word at a time.

Right now, if I press &lt;kbd&gt;Alt&lt;/kbd&gt;+&lt;kbd&gt;LeftArrowKey&lt;/kbd&gt; I go back a couple of letters and then I&#39;m stuck. I won&#39;t go any further backwards and it won&#39;t back to the end of the line with &lt;kbd&gt;Alt&lt;/kbd&gt;+&lt;kbd&gt;RightArrowKey&lt;/kbd&gt; as I would expect. I can&#39;t even use the arrow keys to go to the end of the line, only to the second to last. Can&#39;t input new chars on the line either or indeed delete.

How do I get my beloved shortcut back?

I&#39;m on Mac OS X using Terminal if that&#39;s important.

Content Type	Original Author	Original Content on Stackoverflow
Question	Tyler Brock	View Question on Stackoverflow
Solution 1 - Ruby	Tyler Brock	View Answer on Stackoverflow
Solution 2 - Ruby	heracek	View Answer on Stackoverflow
Solution 3 - Ruby	nomad	View Answer on Stackoverflow
Solution 4 - Ruby	Andrew Prentice	View Answer on Stackoverflow
Solution 5 - Ruby	hanetzer	View Answer on Stackoverflow

ZSH complains about RVM __rvm_cleanse_variables: function definition file not found

Ruby Problem Overview

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Is there a way to auto expand objects in Chrome Dev Tools?

What is Activity.finish() method doing exactly?

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