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Java to Clojure rewrite
...o Clojure's persistent data structures. Worth watching this video to learn more.
Develop small libraries of pure, business logic oriented functions that operate on these immutable structures (e.g. "add an item to shopping cart"). You don't need to do all of these at once since it is easy to add more...
Rename specific column(s) in pandas
...w do I rename a specific column in pandas?
From v0.24+, to rename one (or more) columns at a time,
DataFrame.rename() with axis=1 or axis='columns' (the axis argument was introduced in v0.21.
Index.str.replace() for string/regex based replacement.
If you need to rename ALL columns at once,
Dat...
How can I call controller/view helper methods from the console in Ruby on Rails?
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I observe that I can't execute more than one app.get (a thread error ensues). Is there a way I can flush the system and execute more gets?
– JellicleCat
May 22 '12 at 17:53
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Growing Amazon EBS Volume sizes [closed]
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You can't simply 'bump in' more space on the fly if you need it, but you can resize the partition with a snapshot.
Steps do to this:
unmount ebs volume
create a ebs snapshot
add new volume with more space
recreate partition table and resize
filesyst...
How to make button look like a link?
...his answer is otherwise a good start, but the second answer here is really more thorough and has the right solution for underlining.
– michael
Mar 31 '14 at 4:29
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Capybara Ambiguity Resolution
...er useful when resolving ambiguity:
find('ul > li:first-child')
It's more useful than first('ul > li') as it will wait till first li will appear on the page.
click_link('Create Account', match: :first)
It's better than first(:link, 'Create Account').click as it will wait till at least one ...
What does “|=” mean? (pipe equal operator)
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Do on-demand Mac OS X cloud services exist, comparable to Amazon's EC2 on-demand instances? [closed]
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