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MySQL JOIN the most recent row only?
...he index, rather than also having to read all data from the primary index. Now the pretty solution takes only 1.9 times as long as the subquery-based solution.
– Timo
Dec 4 '15 at 9:21
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How do I use Ruby for shell scripting?
...t file
Also useful from the stdlib is FileUtils
require 'fileutils' #I know, no underscore is not ruby-like
include FileUtils
# Gives you access (without prepending by 'FileUtils.') to
cd(dir, options)
cd(dir, options) {|dir| .... }
pwd()
mkdir(dir, options)
mkdir(list, options)
mkdir_p(dir, opti...
How I can I lazily read multiple JSON values from a file/stream in Python?
...out that other people use "JSON lines", I feel less bad about using it for now.
– UPVOTE IF YOU HATE TRUMP
Jul 30 '11 at 23:16
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Operator precedence with Javascript Ternary operator
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I know this is a very old question, but I am not 100% happy with any of the answers as they all seem incomplete. So here we go again from first principals:
The user's overall aim:
Summarising the code: "I wish to add an error ...
Pretty printing XML in Python
...This is no longer necessary in Python 2.7: xml.dom.minidom's toprettyxml() now produces output like '<id>1</id>' by default, for nodes that have exactly one text child node.
– Marius Gedminas
Jul 12 '13 at 14:00
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Algorithm to compare two images
...at the minimum) a large human analysed set of test data where matches are known beforehand. If for example in your test data you have 1,000 images where 5% of them match, you now have a reasonably reliable benchmark. An algorithm that finds 10% positives is not as good as one that finds 4% of posi...
Find all packages installed with easy_install/pip?
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As of version 1.3 of pip you can now use pip list
It has some useful options including the ability to show outdated packages. Here's the documentation: https://pip.pypa.io/en/latest/reference/pip_list/
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Intellij IDEA Java classes not auto compiling on save
...enable it or click the checkbox next to it
Note: Restart your application now :)
Note: This should also allow live reload with spring boot devtools.
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SET NOCOUNT ON usage
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Ok now I've done my research, here is the deal:
In TDS protocol, SET NOCOUNT ON only saves 9-bytes per query while the text "SET NOCOUNT ON" itself is a whopping 14 bytes. I used to think that 123 row(s) affected was returned f...
What is the benefit of using $() instead of backticks in shell scripts?
...> parent=$(basename $(dirname $PWD))
pax> echo $parent
xyzzy
(a) Now that specific command may not actually work, I haven't tested the functionality. So, if you vote me down for it, you've lost sight of the intent :-) It's meant just as an illustration as to how you can nest, not as a bug-...