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Postgresql: Conditionally unique constraint
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answered Apr 26 '13 at 12:32
Craig RingerCraig Ringer
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MPICH vs OpenMPI
...xtensive optimizations that make it the preferred implementation in nearly all cases.
Feature Support from the Latest MPI Standard
An orthogonal axis to hardware/platform support is coverage of the MPI standard. Here MPICH is usually far and away superior. MPICH has been the first implementation...
How to append rows to an R data frame
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Not knowing what you are trying to do, I'll share one more suggestion: Preallocate vectors of the type you want for each column, insert values into those vectors, and then, at the end, create your data.frame.
Continuing with Julian's f3 (a preallocated data.frame) as the fastest option so far, def...
Jsoup SocketTimeoutException: Read timed out
...timeout :)
– MarcoS
Nov 3 '17 at 15:32
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Use of class definitions inside a method in Java
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This is called a local class.
2 is the easy one: yes, a class file will be generated.
1 and 3 are kind of the same question. You would use a local class where you never need to instantiate one or know about implementation details a...
renamed heroku app from website, now it's not found
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– Connor Leech
Jun 11 '14 at 18:32
@ConnorLeech allegedly yes, but actually that doesn't seem to work.
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Comparing Java enum members: == or equals()?
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Both are technically correct. If you look at the source code for .equals(), it simply defers to ==.
I use ==, however, as that will be null safe.
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HTTPS setup in Amazon EC2
... using that group.
After these steps, your EC2 work is finished, and it's all an application problem.
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Android: TextView automatically truncate and replace last 3 char of String
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edited Jul 18 '18 at 0:32
Pang
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How to do a GitHub pull request
...ng sure your patch is still working) will update the pull request automagically (no need to click on anything)
update that branch: if your pull request is rejected, you simply can add new commits, and/or redo your history completely: it will activate your existing pull request again.
"focus" that br...