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Omitting the second expression when using the if-else shorthand
...(1 - 1 === 0) $('.woot').text('Woot!'); I use that form all the time with PHP, and now that I'm adopting Coffeescript, I use it in my Javascript as well.
– b. e. hollenbeck
Sep 14 '12 at 0:13
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Split (explode) pandas dataframe string entry to separate rows
...se)
.fillna(fill_value))
# revert the original index order
res = res.sort_index()
# reset index if requested
if not preserve_index:
res = res.reset_index(drop=True)
return res
Demo:
Multiple list columns - all list columns must have the same #...
List comprehension vs map
...uages: you only get this benefit if you access your data left-to-right "in order", because python generator expressions can only be evaluated the order x[0], x[1], x[2], ....
However let's say that we have a pre-made function f we'd like to map, and we ignore the laziness of map by immediately forc...
receiving error: 'Error: SSL Error: SELF_SIGNED_CERT_IN_CHAIN' while using npm
... can ignore the error or perhaps locate/add the cert to a trusted store in order to continue using npm.
13 Answers
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Node.js create folder or use existing
...an achieve this very gracefully without encountering a race condition.
In order to prevent dead time between checking for existence and creating the directory, we simply try to create it straight up, and disregard the error if it is EEXIST (directory already exists).
If the error is not EEXIST, ho...
Merging objects (associative arrays)
...properties in the source objects over to the
destination object. It's in-order, so the last source will override
properties of the same name in previous arguments.
_.extend(destination, *sources)
_.extend({name : 'moe'}, {age : 50});
=> {name : 'moe', age : 50}
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What is a good Hash Function?
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Hsieh's hash function is awful, with an order of magnitude more collisions than we want. In particular, strings that differ only in the last 4 bytes can collide easily. If you have a 30 character string, that differ in the last 4 bytes, after 28 bytes have been pro...
Where is svcutil.exe in Windows 7?
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Use HTML5 to resize an image before upload
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Rails 4 LIKE query - ActiveRecord adds quotes
...gt; ["name LIKE ? OR postal_code like ?", "%#{search}%","%#{search}%"], order => 'name'
end
See the docs on AREL conditions for more info.
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