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How to conclude your merge of a file?
...d file (after you resolve conficts by yourself) should be added (git add), and if there is no unmerged file you should git commit
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Want to find records with no associated records in Rails
...drop the DISTINCT. Otherwise, I think you'd want to normalize out the data and index in that case. I might do that by creating a friend_ids hstore or serialized column. Then you could say Person.where(friend_ids: nil)
– Unixmonkey
Dec 20 '16 at 16:02
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git diff file against its last change
...ble to get git to produce a diff between a specific file as it exists now, and as it existed before the last commit that changed it?
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Disable back button in android
How to disable back button in android while logging out the application?
17 Answers
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How to randomly pick an element from an array
I am looking for solution to pick number randomly from an integer array.
12 Answers
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Ruby Arrays: select(), collect(), and map()
..., but a Hash. You can also use select here, but the block is given the key and value in this case:
irb(main):001:0> h = {:sku=>"507772-B21", :desc=>"HP 1TB 3G SATA 7.2K RPM LFF (3 .", :qty=>"", :qty2=>"1", :price=>"5,204.34 P"}
irb(main):002:0> h.select { |key, value| !value.em...
Cython: “fatal error: numpy/arrayobject.h: No such file or directory”
... You don't need to create a setup.py ... you don't need to even open a command line if you use IPython ... it's all very convenient. In your case, try running these commands in IPython or in a normal Python script:
import numpy
import pyximport
pyximport.install(setup_args={"script_args":["--compil...
Return first match of Ruby regex
I'm looking for a way to perform a regex match on a string in Ruby and have it short-circuit on the first match.
5 Answers
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CSS :not(:last-child):after selector
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If it's a problem with the not selector, you can set all of them and override the last one
li:after
{
content: ' |';
}
li:last-child:after
{
content: '';
}
or if you can use before, no need for last-child
li+li:before
{
content: '| ';
}
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Do I need Content-Type: application/octet-stream for file download?
The HTTP standard says:
1 Answer
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