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Best practice to validate null and empty collection in Java
I want to verify whether a collection is empty and null . Could anyone please let me know the best practice.
9 Answers
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Edit a commit message in SourceTree Windows (already pushed to remote)
... I edit an incorrect commit message in SourceTree without touching the command line?
4 Answers
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Encrypt Password in Configuration Files? [closed]
I have a program that reads server information from a configuration file and would like to encrypt the password in that configuration that can be read by my program and decrypted.
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Android: How to enable/disable option menu item on button click?
...enu() method is called
only once, as described above. The
system keeps and re-uses the Menu you
define in this method until your
activity is destroyed. If you want to
change the Options Menu any time after
it's first created, you must override
the onPrepareOptionsMenu() method.
This ...
“implements Runnable” vs “extends Thread” in Java
...purer" way to go.
In practical terms, it means you can implement Runnable and extend from another class as well.
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How do I start Mongo DB from Windows?
...eated the path data/db too but when I tried to start mongodb using the command 'C:\mongodb\bin\mongod.exe' , it is not starting. It is showing admin web console waiting for connections on port 28017 .
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How to branch with TortoiseHG
...he life of me I can't figure out how to make a branch. It seems to understand branches (e.g. in its repository browser) but I just can't seem to find a way to make a branch. This seems like such a fundamental capability since out of the often touted benefits of DVC is the lightweight branching.
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What's this =! operator? [duplicate]
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That's two operators, = and !, not one. It might be an obfuscated way of writing
a = !b;
if (a) {
// whatever
}
setting a to the logical inverse of b, and testing whether the result is true (or, equivalently, whether b was false).
Or it migh...
Celery Received unregistered task of type (run example)
...ig (in the current directory) is not in PYTHONPATH so celery can't find it and falls back to defaults. Simply specify it explicitly when starting celery.
celeryd --loglevel=INFO --settings=celeryconfig
You can also set --loglevel=DEBUG and you should probably see the problem immediately.
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How to split one string into multiple strings separated by at least one space in bash shell?
...s well. It is the best approach in my opinion.
– Alexandros
Dec 17 '18 at 13:19
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@Alexandros My ...