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Singleton by Jon Skeet clarification
...at the post about beforeinitfield and type initialization tell you is that if you have no static constructor, the runtime can initialize it at any time (but before you use it). If you do have a static constructor, your code in the static constructor might initialize the fields, which means that the ...
Make a link use POST instead of GET
I'm not sure if this is even possible. But I was wondering if anyone knows how to make a hyperlink pass some variables and use POST (like a form) as opposed to GET.
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Bash script to set up a temporary SSH tunnel
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If you use it in a script you need to wait for the control socket for a few seconds to become available. My solution: while [ ! -e $ctrl_socket ]; do sleep 0.1; done
– Adam Wallner
Feb 1...
Python executable not finding libpython shared library
...usr/local/lib with the folder where you have installed libpython2.7.so.1.0 if it is not in /usr/local/lib.
If this works and you want to make the changes permanent, you have two options:
Add export LD_LIBRARY_PATH=/usr/local/lib to your .profile in your home directory (this works only if you are ...
How do I run a Ruby file in a Rails environment?
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The simplest way is with rails runner because you don't need to modify your script.
http://guides.rubyonrails.org/command_line.html#rails-runner
Just say rails runner script.rb
share
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imp...
I do not want to inherit the child opacity from the parent in CSS
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@Madmartigan Yes, if you want the text in the parent div to have opacity, then you would have to set the opacity of the text with a span. You can use a polyfill to make it backwards compatible, or you can use a png.
– Dan...
How to access environment variable values?
...mes you might need to see a complete list!
# using get will return `None` if a key is not present rather than raise a `KeyError`
print(os.environ.get('KEY_THAT_MIGHT_EXIST'))
# os.getenv is equivalent, and can also give a default value instead of `None`
print(os.getenv('KEY_THAT_MIGHT_EXIST', defa...
How to access component methods from “outside” in ReactJS?
...t;
</div>
);
}
}
Note: This will only work if the child component is declared as a class, as per documentation found here: https://facebook.github.io/react/docs/refs-and-the-dom.html#adding-a-ref-to-a-class-component
Update 2019-04-01: Changed example to use a class ...
Using ls to list directories and their total sizes
...dable *
Explanation:
du: Disk Usage
-s: Display a summary for each specified file. (Equivalent to -d 0)
-h: "Human-readable" output. Use unit suffixes: Byte, Kibibyte (KiB), Mebibyte (MiB), Gibibyte (GiB), Tebibyte (TiB) and Pebibyte (PiB). (BASE2)
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Make: how to continue after a command fails?
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For example,
clean:
-rm -f *.o
This causes rm to continue even if it is unable to remove a file.
All examples are with rm, but are applicable to any other command you need to ignore errors from (i.e. mkdir).
sh...