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What is the meaning of the CascadeType.ALL for a @ManyToOne JPA association
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The meaning of CascadeType.ALL is that the persistence will propagate (cascade) all EntityManager operations (PERSIST, REMOVE, REFRESH, MERGE, DETACH) to the relating entities.
It seems in your case to be a bad idea, as removing an Address would lead ...
List all virtualenv
In virtualenvwrapper, is there a simple way to list all virtualenv on my machine?
8 Answers
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What's the difference between git clone --mirror and git clone --bare
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The difference is that when using --mirror, all refs are copied as-is. This means everything: remote-tracking branches, notes, refs/originals/* (backups from filter-branch). The cloned repo has it all. It's also set up so that a remote update will re-fetch everything f...
Remove all whitespace in a string
I want to eliminate all the whitespace from a string, on both ends, and in between words.
10 Answers
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Is there a tool to convert JavaScript files to TypeScript [closed]
... TypeScript came out, it is an exciting news for me, but how can I convert all the existing JavaScript files to TypeScript.
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RVM: Uninstalling all gems of a gemset
I have global gems and various gemsets. I want to remove all gems of a gemset. Is there a way do to this, besides uninstalling the gemset?
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Apache2: 'AH01630: client denied by server configuration'
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If you are using Apache 2.4
You have to check allow and deny rules
Check out http://httpd.apache.org/docs/2.4/upgrading.html#access
In 2.2, access control based on client hostname, IP address, and other
characteristics of client requests was done using the directi...
How do I force “git pull” to overwrite local files?
... content), these files will not be affected.
First, run a fetch to update all origin/<branch> refs to latest:
git fetch --all
Then, you have two options:
git reset --hard origin/master
OR If you are on some other branch:
git reset --hard origin/<branch_name>
Explanation:
git fetch do...
Java: notify() vs. notifyAll() all over again
If one Googles for "difference between notify() and notifyAll() " then a lot of explanations will pop up (leaving apart the javadoc paragraphs). It all boils down to the number of waiting threads being waken up: one in notify() and all in notifyAll() .
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Delete all lines beginning with a # from a file
All of the lines with comments in a file begin with # . How can I delete all of the lines (and only those lines) which begin with # ? Other lines containing # , but not at the beginning of the line should be ignored.
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