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What's the difference between @JoinColumn and mappedBy when using a JPA @OneToMany association
...roperty of the relationship annotations whose purpose is to generate a mechanism to relate two entities which by default they do by creating a join table. MappedBy halts that process in one direction.
The entity not using MappedBy is said to be the owner of the relationship because the mechanics o...
How can I use a Python script in the command line without cd-ing to its directory? Is it the PYTHONP
...PATH as described above under Interface options. The search
path can be manipulated from within a Python program as the variable
sys.path.
http://docs.python.org/2/using/cmdline.html#envvar-PYTHONPATH
What you're looking for is PATH.
export PATH=$PATH:/home/randy/lib/python
However, to r...
How to make a promise from setTimeout
...olving/rejecting the promise as arguments.
First, since async now has a meaning in JavaScript (even though it's only a keyword in certain contexts), I'm going to use later as the name of the function to avoid confusion.
Basic Delay
Using native promises (or a faithful polyfill) it would look like...
How much overhead does SSL impose?
...nt to unencrypted transmission at the very least for safety from spying organizations. Nowadays, something like chacha20-poly1305 is strongly recommended for bulk encryption due to its independence from such organizations.
– Evi1M4chine
Sep 14 '16 at 23:42
...
Importing CommonCrypto in a Swift framework
..., but I have no idea how to get to that in Swift.
– danimal
Oct 2 '14 at 0:29
2
For me it didn't ...
On delete cascade with doctrine2
I'm trying to make a simple example in order to learn how to delete a row from a parent table and automatically delete the matching rows in the child table using Doctrine2.
...
Forward host port to docker container
Is it possible to have a Docker container access ports opened by the host? Concretely I have MongoDB and RabbitMQ running on the host and I'd like to run a process in a Docker container to listen to the queue and (optionally) write to the database.
...
using gitignore to ignore (but not delete) files
I have a tmp directory in my git repo I'd like to still exist, but be ignored. I added it to .gitignore , but git status still tells me about changes to files in that directory. I tried git rm -r --cached , but that removes it from the remote repo. How can I stop tracking changes to this dire...
Difference between size_t and std::size_t
What are the differences between size_t and std::size_t in terms of where they are declared, when they should be used and any other differentiating features?
...
What is a 'Closure'?
...ression because all the symbols occurring in it are defined in it (their meanings are clear), so you can evaluate it. In other words, it is self-contained.
But if you have a function like this:
function open(x) {
return x*y + 3;
}
it is an open expression because there are symbols in it which ...