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Coffeescript — How to create a self-initiating anonymous function?
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@scribu Well, those two statements are very different, and yours is actually the one that I should have given. Mine assigns the function -> console.log 'this runs right away' to f, then runs it; yours runs the function and then assigns its result to f, as in the original quest...
Delete the first three rows of a dataframe in pandas
I need to delete the first three rows of a dataframe in pandas.
7 Answers
7
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Ruby: How to turn a hash into HTTP parameters?
...onality was removed from the gem.
Julien, your self-answer is a good one, and I've shameless borrowed from it, but it doesn't properly escape reserved characters, and there are a few other edge cases where it breaks down.
require "addressable/uri"
uri = Addressable::URI.new
uri.query_values = {:a ...
how do I use the grep --include option for multiple file types?
...*.{html,php,htm} "pattern" /some/path/
Don't forget that you can use find and xargs for this sort of thing to:
find /some/path/ -name "*.htm*" -or -name "*.php" | xargs grep "pattern"
HTH
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Get value from SimpleXMLElement Object
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Just noticed if you json_encode the xml object and then json_decode it you get a nested stdObject to deal with, quite handy for when you're being lazy & working with simple structures :D
– Louis
Sep 20 '13 at 6:59
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Can you have multiple $(document).ready(function(){ … }); sections?
...rtup concerns - i.e. some code which is always run when loading completes, and some which is only required on some content nodes? In such a situation, the context should be silo'd, and order of execution should be immaterial - being able to assign to the 'DOM ready' event without overwriting the pre...
List to array conversion to use ravel() function
I have a list in python and I want to convert it to an array to be able to use ravel() function.
6 Answers
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How do I run a simple bit of code in a new thread?
...o be careful about using the flag, since you did not describe its purpose, and its naming could easily lead one to believe that it does something else than what it actually does.
– Zero3
Sep 23 '16 at 8:44
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Iterate keys in a C++ map
...ator returns (for example because you want to use your key-iterator with standard algorithms, so that they operate on the keys instead of the pairs), then take a look at Boost's transform_iterator.
[Tip: when looking at Boost documentation for a new class, read the "examples" at the end first. You ...
How to check if a URL is valid
...by:
require 'uri'
if url =~ URI::regexp
# Correct URL
end
Like Alexander Günther said in the comments, it checks if a string contains a URL.
To check if the string is a URL, use:
url =~ /\A#{URI::regexp}\z/
If you only want to check for web URLs (http or https), use this:
url =~ /\A#{U...