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SQLAlchemy: What's the difference between flush() and commit()?
...ted to the database until they are committed (if your program aborts for some reason in mid-session transaction, any uncommitted changes within are lost).
The session object registers transaction operations with session.add(), but doesn't yet communicate them to the database until session.flush() i...
Java: notify() vs. notifyAll() all over again
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However (if I do understand the difference between these methods right), only one thread is always selected for further monitor acquisition.
That is not correct. o.notifyAll() wakes all of the threads that are blocked in o.wait() calls. The threads are only allowed to return fr...
Should I use PATCH or PUT in my REST API?
I want to design my rest endpoint with the appropriate method for the following scenario.
6 Answers
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Break a previous commit into multiple commits
...If you are on a different branch (e.g., a feature branch) that you plan to merge into master:
$ git rebase -i master
When you get the rebase edit screen, find the commit you want to break apart. At the beginning of that line, replace pick with edit (e for short). Save the buffer and exit. Reb...
Why does the Visual Studio editor show dots in blank spaces?
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Press Ctrl+R, Ctrl+W.
If you are using C# keyboard mappings: (thanks Simeon)
Press Ctrl+E, S.
If you want to use the menu: (thanks angularsen)
Edit > Advanced > View White Space
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What is an MDF file? [closed]
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For people like me: Q: what do the letters mean? A: MDF – It stands for Master Database File (datanumen.com/blogs/5-basic-facts-mdf-ldf-files-sql-server)
– Vasily Hall
May 22 '19 at 17:45
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Tools for creating Class Diagrams [closed]
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Experimenting it and it's really nice and clean! The login is pretty straight forward with g+ account. +1 for sure! :)
– Ian Medeiros
Apr 4 '13 at 18:25
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What do the icons in Eclipse mean?
I just came to SO looking for this, didn't find it, and found it on my own elsewhere. But I thought it would be good for SO to have the answer for future reference; I wondered about them all the time when I was new to Eclipse (this was before I discovered SO).
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Oracle SQL, concatenate multiple columns + add text
... This is so ugly, with respect to an very old-brand DBMS. How come Oracle don't suppoer many-argument-version Concat? However, thanks to Shankar, there's a || operator.
– Scott Chu
Aug 3 '17 at 2:31
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How to initialize array to 0 in C?
...mply
char ZEROARRAY[1024];
at global scope it will be all zeros at runtime. But actually there is a shorthand syntax if you had a local array. If an array is partially initialized, elements that are not initialized receive the value 0 of the appropriate type. You could write:
char ZEROARRAY[1024...