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How can I set NODE_ENV=production on Windows?
...shell, so use:
$env:NODE_ENV="production"
Per @jsalonen's answer below. If you're in CMD (which is no longer maintained), use
set NODE_ENV=production
This should be executed in the command prompt where you intend to run your Node.js application.
The above line would set the environment variab...
How do you make an array of structs in C?
... of the struct type and then actually making an instance of it - I have a different struct, one that I defined the contents of below where I first make an instance of it (just one this time, not an array), so why didn't this make the massive series of errors? It worked just fine, which led me to th...
Extracting specific columns in numpy array
...asy question but say I have an MxN matrix. All I want to do is extract specific columns and store them in another numpy array but I get invalid syntax errors.
Here is the code:
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Git: how to reverse-merge a commit?
... past by rebasing and then resetting, but you really don't want to do that if you have already pushed your commits to another repository (or someone else has pulled from you).
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PostgreSQL ERROR: canceling statement due to conflict with recovery
...ueries on slaves with a duration less than 900 seconds won't be cancelled. If your workload requires longer queries, just set these options to a higher value.
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How to increment a NSNumber
... you think, and may be slower at times (it could default to "valueForKey:" if no synthesised accessor exists for the "property" (in your case intValue) exists. intValue was never defined as as @property of NSNumber.
– Motti Shneor
Jul 21 at 9:19
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Converting integer to binary in python
...ro-padded on the left
b converts the number to its binary representation
If you're using a version of Python 3.6 or above, you can also use f-strings:
>>> f'{6:08b}'
'00000110'
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How to negate the whole regex?
...h regex solutions to toy problems as exercises; they should be educational if you're trying to learn the various ways you can use lookarounds (nesting them, using them to capture, etc):
codingBat plusOut using regex
codingBat repeatEnd using regex
codingbat wordEnds using regex
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Slide right to left?
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The only trouble is that if there is content inside, it "squashes" it horizontally, causing controls to move about/resize/wrap etc. Is there a good solution for that?
– Neil Barnwell
May 15 '17 at 22:51
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Rails: select unique values from a column
...ts. Not plain ratings. And from uniq's point of view, they are completely different. You can use this:
Model.select(:rating).map(&:rating).uniq
or this (most efficient)
Model.uniq.pluck(:rating)
# rails 5+
Model.distinct.pluck(:rating)
Update
Apparently, as of rails 5.0.0.1, it works onl...