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Want to find records with no associated records in Rails
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This is really good! Thanks! Now if the rails gods could perhaps implement it as a simple Person.where(contacts: nil) or Person.with(contact: contact) if using where encroaches too far into 'properness' - but given that contact: is already being parsed a...
Foreign key constraint may cause cycles or multiple cascade paths?
...guaranteed that SomeOtherTable-records never belong to both Details, it is now impossible to make SomeOhterTable's records cascade delete for both details, because there are multiple cascading paths from Master to SomeOtherTable (one via Detail1 and one via Detail2).
Now you may already have underst...
Why git can't do hard/soft resets by path?
...set the index and the working tree to HEAD.
I think it should be clear by now why this operation is not for specific files by its nature - it is intended to move a branch head in the first place, resetting the working tree and the index is secondary functionality.
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How do I get into a non-password protected Java keystore or change the password?
... Lion (based on comments and another answer here), the password for Mac is now also "changeit", probably because Oracle is now handling distribution for the Mac JVM as well.
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Android List View Drag and Drop sort
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I have been working on this for some time now. Tough to get right, and I don't claim I do, but I'm happy with it so far. My code and several demos can be found at
https://github.com/bauerca/drag-sort-listview
Its use is very similar to the TouchInterceptor (on wh...
Difference between git stash pop and git stash apply
...ains "Hello" string.
Let's modify the file and add " world" string to it. Now you want to move to a different branch to fix a minor bug you've just found, so you need to stash your changes:
git stash
You moved to the other branch, fixed the bug and now you're ready to continue working on your ma...
Is Redis just a cache?
...r_text "No, its a lot more" answered_by 15 votes 1
OK
Handling Up Votes
Now, everytime someone upvotes a question or an answer, you just need to do this
$ HINCRBY question:1 votes 1
(integer) 1
$ HINCRBY question:1 votes 1
(integer) 2
List of Questions for Homepage
Next, we want to store the...
How to update a plot in matplotlib?
..., after I replotted the data another set of plots were drawn in my GUI, so now I had 4 plots after recalculation, just like before.
– thenickname
Nov 4 '10 at 16:59
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jQuery append() vs appendChild()
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Do you know why append is "safe" and appendChild is not? What does domManip do?
– Rob Fox
Mar 17 '14 at 8:29
2
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Should “node_modules” folder be included in the git repository
...doing so as listed in context of accepted answer are pretty outdated as of now.
Published packages can't be revoked from npm registry that easily anymore. So you don't have to fear loosing dependencies your project has relied on before.
Putting package-json.lock file in VCS is helping with frequen...