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How do I preview emails in Rails?
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# Accessible from http://localhost:3000/rails/mailers/notifier/welcome
def welcome
Notifier.welcome(User.first)
end
end
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How to identify all stored procedures referring a particular table
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How do I create a namespace package in Python?
...g_resources.declare_namespace() one, because it's future-proof and already compatible with implicit namespace packages.
Python 3.3 introduces implicit namespace packages, see PEP 420.
This means there are now three types of object that can be created by an import foo:
A module represented by a...
Split files using tar, gz, zip, or bzip2 [closed]
I need to compress a large file of about 17-20 GB. I need to split it into several files of around 1GB per file.
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Command to get time in milliseconds
Is there a shell command in Linux to get the time in milliseconds?
12 Answers
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ggplot with 2 y axes on each side and different scales
...er visualization techniques.
Maybe you can use faceting and scale free to compare the two data series? - e.g. look here: https://github.com/hadley/ggplot2/wiki/Align-two-plots-on-a-page
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How can I delete all of my Git stashes at once?
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The following command deletes all your stashes:
git stash clear
From the git documentation:
clear
Remove all the stashed states.
IMPORTANT WARNING: Those states will then be subject to pruning, and may be impossible to recover (...).
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How to pip or easy_install tkinter on Windows
...at you use a version of Python supporting Tk 8.5 or greater, and ttk. We recommend installing the "ActivePython" distribution from ActiveState, which includes everything you'll need.
In your web browser, go to Activestate.com, and follow along the links to download the Community Edition of ActivePy...
Why is enum class preferred over plain enum?
I heard a few people recommending to use enum classes in C++ because of their type safety .
9 Answers
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Do I need to heartbeat to keep a TCP connection open?
I have two components that that communicate via TCP/IP. Component A acts as a server/listener and Component B is the client. The two should communicate as quickly as possible. There can only ever be one connection at any time (though that is aside to this question). A senior developer at my comp...