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Why use a READ UNCOMMITTED isolation level?
...level allows dirty reads. One transaction may see uncommitted changes made by some other transaction.
To maintain the highest level of isolation, a DBMS usually acquires locks on data, which may result in a loss of concurrency and a high locking overhead. This isolation level relaxes this property....
How do I prevent commands from showing up in Bash history?
...d in Bash history, because I might accidentally run the same command again by reverse-i-search . Is there a good way to prevent this from happening?
...
Find size of Git repository
... more efficient way to get a rough size: git count-objects -vH (see answer by @VonC)
For different ideas of "complete size" you could use:
git bundle create tmp.bundle --all
du -sh tmp.bundle
Close (but not exact:)
git gc
du -sh .git/
With the latter, you would also be counting:
hooks
conf...
Access restriction: The type 'Application' is not API (restriction on required library rt.jar)
...cess restrictions.
Go to the properties of your Java project,
i.e. by selecting "Properties" from the context menu of the project in the "Package Explorer".
Go to "Java Build Path", tab "Libraries".
Expand the library entry
select
"Access rules",
"Edit..." and
"Add..." a "Resolution:...
How do I push amended commit to the remote Git repository?
...
I actually once pushed with --force and .git repository and got scolded by Linus BIG TIME. In general this will create a lot of problems for other people. A simple answer is "Don't do it".
I see others gave the recipe for doing so anyway, so I won't repeat them here. But here is a tip to recove...
How to get multiple counts with one SQL query?
...evel = 'personal' then 1 else 0 end) AS PersonalCount
FROM yourtable
GROUP BY distributor_id
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Why seal a class?
...ute is sealed.
The MSDN article for this topic is Limiting Extensibility by Sealing Classes.
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How to test if string exists in file with Bash?
...gs
Interpret PATTERN as a list of fixed strings, separated by newlines, any of which is to be matched.
-x, --line-regexp
Select only those matches that exactly match the whole line.
-q, --quiet, --silent
Quiet; do not write anything to standard output...
Java: Date from unix timestamp
...
For 1280512800, multiply by 1000, since java is expecting milliseconds:
java.util.Date time=new java.util.Date((long)timeStamp*1000);
If you already had milliseconds, then just new java.util.Date((long)timeStamp);
From the documentation:
All...
In AngularJS, what's the difference between ng-pristine and ng-dirty?
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The ng-dirty class tells you that the form has been modified by the user, whereas the ng-pristine class tells you that the form has not been modified by the user. So ng-dirty and ng-pristine are two sides of the same story.
The classes are set on any field, while the form has two prop...