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Difference between volatile and synchronized in Java
...om obtaining the monitor (or lock) for the same object, thereby preventing all code blocks protected by synchronization on the same object from executing concurrently. Synchronization also creates a "happens-before" memory barrier, causing a memory visibility constraint such that anything done up t...
What does $@ mean in a shell script?
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$@ is all of the parameters passed to the script.
For instance, if you call ./someScript.sh foo bar then $@ will be equal to foo bar.
If you do:
./someScript.sh foo bar
and then inside someScript.sh reference:
umbrella_corp_...
How can I verify if one list is a subset of another?
I need to verify if a list is a subset of another - a boolean return is all I seek.
15 Answers
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Entity Framework - Start Over - Undo/Rollback All Migrations
...oint where I just want to start over, so is there a way to completely undo all migrations, erase the history, and delete the migration code, so I'm back to square one?
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How to get a list of all valid IP addresses in a local network? [closed]
Is there a way to get a list of all valid IP addresses in a local network?
3 Answers
3...
Batch file. Delete all files and folders in a directory
I want to have a batch file that will delete all the folders and files in my cache folder for my wireless toolkit.
15 Answe...
git - skipping specific commits when merging
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If you want to merge most but not all of the commits on branch "maint" to "master", for instance, you can do this. It requires some work---- as mentioned above, the usual use case is to merge everything from a branch--- but sometimes it happens that you made ...
Sublime - delete all lines containing specific value
.../or not connected.*\n
Leave the Replace With field empty.
Click Replace All
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Is it possible to insert multiple rows at a time in an SQLite database?
...blename'
SELECT 'data1' AS 'column1', 'data2' AS 'column2'
UNION ALL SELECT 'data1', 'data2'
UNION ALL SELECT 'data1', 'data2'
UNION ALL SELECT 'data1', 'data2'
a note on performance
I originally used this technique to efficiently load large datasets from Ruby on Rails. However, as Jaime...
Get a list of all threads currently running in Java
Is there any way I can get a list of all running threads in the current JVM (including the threads not started by my class)?
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