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Label encoding across multiple columns in scikit-learn
...commended way is
OneHotEncoder().fit_transform(df)
as the OneHotEncoder now supports string input.
Applying OneHotEncoder only to certain columns is possible with the ColumnTransformer.
EDIT:
Since this answer is over a year ago, and generated many upvotes (including a bounty), I should probabl...
Which, if any, C++ compilers do tail-recursion optimization?
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ICC would do so, I believe. To the best of my knowledge, ICC produces the fastest code on the market.
– Paul Nathan
Oct 21 '08 at 4:04
35
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Checking if an object is a given type in Swift
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In Swift 2.2 - 5 you can now do:
if object is String
{
}
Then to filter your array:
let filteredArray = originalArray.filter({ $0 is Array })
If you have multiple types to check:
switch object
{
case is String:
...
cas...
Send a pull request on GitHub for only latest commit
.... The pull request UI on github.com shows the last 9 commits and I don't know how to filter that down.
7 Answers
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What does ||= (or-equals) mean in Ruby?
...discussed so often on the Ruby mailing-lists and Ruby blogs that there are now even threads on the Ruby mailing-list whose only purpose is to collect links to all the other threads on the Ruby mailing-list that discuss this issue.
Here's one: The definitive list of ||= (OR Equal) threads and pages
I...
Do git tags get pushed as well?
..., I will only every advise someone to use git push origin <tag_name> now." - copied from stackoverflow.com/a/5195913/4130619
– reducing activity
Aug 10 '15 at 16:46
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android TextView: setting the background color dynamically doesn't work
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I don't fully understand it right now (looking over api doc's) but it does work, so thank you!
– CodeJustin.com
Apr 23 '10 at 5:17
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Traits in PHP – any real world examples/best practices? [closed]
Traits have been one of the biggest additions for PHP 5.4. I know the syntax and understand the idea behind traits, like horizontal code re-use for common stuff like logging, security, caching etc.
...
CRON job to run on the last day of the month
...-1 month'); $previousMonth = $date->format('Y-m'); // $previousMonth is now 2013-02. Build query to fetch products for the previous month.
– Lamy
Jan 19 '13 at 6:41
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Wait for a process to finish
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Who would have known that tail would do this.
– ctrl-alt-delor
Jul 30 '17 at 15:06
8
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