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How important is the order of columns in indexes?
...while Column 1 above does negate 1/2 the possibilities, the index already knows which index page to go straight to for the Column2 value, it does not necessary need Column 1 to narrow down the set.
– CodeCowboyOrg
Mar 23 '15 at 17:57
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Formatting “yesterday's” date in python
... for options, you can as well use Pendulum (pendulum.eustace.io): pendulum.now().subtract(days=-1).strftime('%m%d%y')
– AFD
May 15 '19 at 11:22
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Copy existing project with a new name in Android Studio
...(using a file manager) of the entire module folder and give it a new name. Now open it up and use Refactor -> Rename (right click on the item you want to rename) to rename your module and package.
See this for details about refactoring in IntelliJ/Android Studio.
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req.body empty on posts
...rlencoded data, not multipart
As @SujeetAgrahari mentioned, body-parser is now inbuilt with express.js.
Use app.use(express.json()); to implement it in recent versions.
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If a folder does not exist, create it
...er control in my application. I want to save a file in a specified folder. Now I want, if this folder does not exist, to first create it, and then save my file to this folder. If the folder already exists, then just save the file in it.
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How can I disable logging of asset pipeline (sprockets) messages in Ruby on Rails 3.1?
... end
alias_method_chain :call, :quiet_assets
end
end
Updated: It now works for Ruby on Rails 3.2 too (previous attempt fixes before_dispatch, and now we're going for the root rack call instead)
Update: A proper Rack middleware solution (instead of fragile alias_method_chain) from @macour...
How can I recover a removed file in Mercurial (if at all)?
...<revision number> <path to deleted file>
The deleted file will now be in your working copy, ready to be committed back into head.
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Semantic-ui vs Bootstrap [closed]
... that we can't see the differences between Bootstrap and Semantic-UI right now, Semantic-ui is new, so we have to let the time decide :)
My opinion: Semantic-UI design is better than Bootstrap and more clean, easy to use, strict coding, useful components, lightweight. I see the future of Frameworks...
What is an intuitive explanation of the Expectation Maximization technique? [closed]
...e could find the exact means if we wanted).
This is, generally speaking, known as maximum likelihood estimation. Given some data, we compute the value of a parameter (or parameters) that best explains that data.
Now imagine that we cannot see which value was sampled from which group. Everything lo...
Read stream twice
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I know this comment is out of time, but, here in the first option, if you read the inputstream as a byte array, doesn't it means that you're loading all the data to memory? which could be a big problem if you're loading somethin...