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How to avoid mysql 'Deadlock found when trying to get lock; try restarting transaction'
...key(1), locks key(2);
it will be impossible to get a deadlock.
So this is what I suggest:
Make sure you have no other queries that lock access more than one key at a time except for the delete statement. if you do (and I suspect you do), order their WHERE in (k1,k2,..kn) in ascending order.
Fix y...
Spring boot @ResponseBody doesn't serialize entity id
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If one were to use the first block of code, what directory and file might it go into?
– David Krider
Aug 28 '18 at 21:45
1
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Add SUM of values of two LISTS into new LIST
... just curious how would zip() handles if array lengths for different? i.e what does zip returns for different array lengths and how would that affect the operation for x + y
– ealeon
Oct 24 '15 at 15:00
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Standard alternative to GCC's ##__VA_ARGS__ trick?
...__ for the rest-parameter) in document N976, but that received no response whatsoever from the committee; I don't even know if anyone read it. In 2016 it was proposed again in N2023, and I encourage anyone who knows how that proposal is going to let us know in the comments.
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Meaning of Android Studio error: Not annotated parameter overrides @NonNull parameter
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What is the purpose of it?
– IgorGanapolsky
Sep 10 '14 at 17:36
2
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Typical .gitignore file for an Android app
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In addition to what the others have suggested, I'd like to add the proguard folder, in case you are using it. You can either ignore the whole folder or just dump.txt, seeds.txt and usage.txt. Basically, it's a good idea to keep mapping.txt ...
Is it possible to change the package name of an Android app on Google Play?
...o change the actual package name of an Android app that is on Google Play. What I mean by package name is the name that will show up in the URL. Please, can anyone tell me why this is / is not possible?
Thanks!
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Center Oversized Image in Div
... right and then 50% to the left again. That would result in zero shift, so what?
But the 50% are not the same, because context is important. If you use relative units, a margin will be calculated as percentage of the width of the parent element, while the transform will be 50% relative to the same e...
How do I debug error ECONNRESET in Node.js?
...ould look at the API server logs to see if it complains about something.
What could also be the case: at random times, the other side is overloaded and simply kills the connection as a result. If that's the case, depends on what you're connecting to exactly…
But one thing's for sure: you indeed...
Print number of keys in Redis
...of keys matching a given pattern by sampling keys at random, then checking what fraction of them matches the pattern.
Example in python; counting all keys starting with prefix_:
import redis
r = redis.StrictRedis(host = 'localhost', port=6379)
iter=1000
print 'Approximately', r.dbsize() * float(su...