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Read first N lines of a file in python
We have a large raw data file that we would like to trim to a specified size.
I am experienced in .net c#, however would like to do this in python to simplify things and out of interest.
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REST, HTTP DELETE and parameters
...nly reason why you should be putting a verb (force_delete) into the URI is if you would need to overload GET/POST methods in an environment where PUT/DELETE methods are not available. Judging from your use of the DELETE method, this is not the case.
HTTP error code 409/Conflict should be used for s...
What is sr-only in Bootstrap 3?
...of the rendered page.
Screen readers will have trouble with your forms if you don't include a label for every input. For these inline forms, you can hide the labels using the .sr-only class.
Here is an example styling used:
.sr-only {
position: absolute;
width: 1px;
height: 1px;
paddi...
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 ...
Get line number while using grep
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that would be command line switch -v. If you run 'grep --help' it will display all options
– Miro A.
Jul 9 '10 at 16:05
56
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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...
How do I get Pyflakes to ignore a statement?
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If you can use flake8 instead - which wraps pyflakes as well as the pep8 checker - a line ending with
# NOQA
(in which the space is significant - 2 spaces between the end of the code and the #, one between it and the NOQA...
How to import a module given its name as string?
...e importlib.import_module for Python 2 and and Python 3.
You can use exec if you want to as well.
Or using __import__ you can import a list of modules by doing this:
>>> moduleNames = ['sys', 'os', 're', 'unittest']
>>> moduleNames
['sys', 'os', 're', 'unittest']
>>> m...
Find and kill a process in one line using bash and regex
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There is one small issue - if the process has already been terminated, this line of kill will churn out with the standard output kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]
– Lionel...
Updating Bootstrap to version 3 - what do I have to do?
...IE. NOTE this won't work with CDN, see: IE8 issue with Twitter Bootstrap 3
If you use Glyphicons, you will have to add them from http://glyphicons.getbootstrap.com/ ( icons have been moved to a separate repository.) Glyphicons are back since RC2 (180 glyphs in font format from the Glyphicon Halfling...