pip with multiple versions

# The system default python:
$ python -m pip install fish

# A virtualenv's python:
$ .env/bin/python -m pip install fish

# A specific version of python:
$ python-3.6 -m pip install fish




Google - Convert Google Maps starred places into a My Map

Found this on Google Maps forum:

• You can export them using Google Takeout
  https://www.google.com/settings/takeout
• Export them from "Google Maps (My Places)", not from "Bookmarks".
  They will be downloaded as a GeoJSON file.
• You can use this site to convert your file to KML GeoJSON
  http://nearby.org.uk/convert-saved-places.php
  
• Once you download the KML file you can import it into your custom map
• This help center article explains how to do it.
  https://support.google.com/mymaps/answer/3024836?hl=en
  

Sublime Text - Soda Theme

link

Cygwin - Fix slow startup

$ mv /etc/profile.d/bash_completion.sh{,.disabled}

source

Windows 7 Sharing

Add Authenticated Users to have full control

Cygwin - Forward- and backword-word in rxvt

Add this to your ~/.inputrc:

# Control+right
"\eOc": forward-word
# Control+left
"\eOd": backward-word

Notice those are O's (the letter) not 0's (zeroes).

You may need to have this in your .bashrc
export INPUTRC=$HOME/.inputrc

Java Swing - Set default window close operation

setDefaultCloseOperation(EXIT_ON_CLOSE)

Eclipse - Tabs to Spaces only

• Window menu → Preferences...
• Java → Code Style → Formatter → New... button
• Enter any name → OK
• Indentation tab → Under General settings, set Tab policy to Spaces only

Delete/disconnect network connections/drive in Windows Vista

net use * /d

C++ - Show virtual table

g++ -fdump-class-hierarchy main.cpp

a.vim

This plugin lets you switch between source file and header file by typing
:A

Script link: a.vim

Install developer tools in Fedora Core 8

sudo yum groupinstall "Development Tools"

Virtual functions performance cost

From Efficient C++ Performance Programming Techniques:

Virtual functions seem to inflict a performance cost in several ways:

• The vptr must be initialized in the constructor.
• A virtual function is invoked via pointer indirection. We must fetch the pointer to the function table and then access the correct function offset.
• Inlining is a compile-time decision. The compiler cannot inline virtual functions whose resolution takes place at run-time.

Get CPU info in Linux

cat /proc/cpuinfo
CPU's with multiple cores show "cpu count : 2"

Use FireFox as the default browser to open links in Outlook

1. Open Explorer
2. Select Tools and then Folder Options
3. Select the File Types tab
4. Select Extension: (NONE), File Type: URL:HyperText Transfer Protocol
5. Click Advanced toward the bottom of the window
6. In the Edit File Type window, select open and click Edit
7. Clear the check for DDE above the DDE message box (which should contain "%1" or similar)
8. Click OK, Click OK
9. Repeat for File Type: HyperText Transfer Protocol with Privacy and FTP

High resolution ("real-time") timers

To compile: gcc -lrt time.c
More info: link

C/C++ Show macros

In gcc or g++, to show all of the macros that are defined for a given platform:

gcc -dM -E test.c

or

g++ -dM -E test.cpp

Ubuntu - core dump

From https://answers.launchpad.net/ubuntu/+question/10616

It appears that resource limits (which include the maximum size of a core dump file) are set by PAM on login. The settings for these limits are in /etc/security/limits.conf, which on my system (which is unmodified) is comments only. A quick look at the source code suggests that the default core dump limit is 0 (zero), which means no dump at all is created (even though the message suggests otherwise).

In summary: edit /etc/security/limits.conf, set the core limit to be non-zero (measured in kilobytes), and log in again.

I hope that works!

VIM - omnicppcomplete

I had to put these in my ~/.vimrc to get omnicppcomplete to work

autocmd BufNewFile,BufRead,BufEnter *.cpp,*.hpp set omnifunc=omni#cpp#complete#Main

"ctags
map <C-F12> :!ctags -R --c++-kinds=+p --fields=+iaS --extra=+q .<CR>

"omnicppcomplete
imap <C-Space> <C-x><C-o>
let OmniCpp_MayCompleteDot = 0
let OmniCpp_MayCompleteArrow = 0

VIM - NERDTree plugin

Good file explorer.

plugin: link

Add this to ~/.vimrc

"NERDTree Toggle
noremap <Leader>][ :NERDTreeToggle