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Difference between save and saveAndFlush in Spring data jpa
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On saveAndFlush, changes will be flushed to DB immediately in this command. With save, this is not necessarily true, and might stay just in memory, until flush or commit commands are issued.
But be aware, that even if you flush th...
Python: Checking if a 'Dictionary' is empty doesn't seem to work
... if a dictionary is empty but it doesn't behave properly. It just skips it and displays ONLINE without anything except of display the message. Any ideas why ?
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Why does my application spend 24% of its life doing a null check?
I've got a performance critical binary decision tree, and I'd like to focus this question on a single line of code. The code for the binary tree iterator is below with the results from running performance analysis against it.
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Merge two Git repositories without breaking file history
I need to merge two Git repositories into a brand new, third repository. I've found many descriptions of how to do this using a subtree merge (for example Jakub Narębski's answer on How do you merge two Git repositories? ) and following those instructions mostly works, except that when I commit...
Can't connect to localhost on SQL Server Express 2012 / 2016
...press 2012 but I cannot connect to localhost. I tried localhost\SQLExpress and Windows authentication but it gives me an error message saying cannot connect. Am I missing something here? I've used SQL Server 2008 before and I've never had issues connecting to localhost. It seems that it can't even f...
ImportError: DLL load failed: %1 is not a valid Win32 application. But the DLL's are there
...d opencv_python-3.3.0+contrib-cp35-cp35m-win_amd64 from above package list and was able to import cv2 successfully after hours of struggle. Thanks a ton.
– emeralddove
Sep 23 '17 at 8:48
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What's the difference between Invoke() and BeginInvoke()
Just wondering what the difference between BeginInvoke() and Invoke() are?
6 Answers
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C# using streams
...treams are kind of mysterious to me. I don't know when to use which stream and how to use them. Can someone explain to me how streams are used?
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Create new tmux session from inside a tmux session
...es or switches to a given session, depending on whether one is inside tmux and the session exists.
6 Answers
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TDD/BDD screencast/video resources [closed]
I've recently finished watching the Autumn of Agile screencasts and I'm looking for more material of similar scope. Basically, I'm looking for screencasts that present TDD/BDD process while developing somewhat "real life" applications (or parts of them) - so no 20 minute intros please. I'm surpris...