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Order by multiple columns with Doctrine
...qb->orderBy('column1 ASC, column2 DESC');
As you have noted, multiple calls to orderBy do not stack, but you can make multiple calls to addOrderBy:
$qb->addOrderBy('column1', 'ASC')
->addOrderBy('column2', 'DESC');
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Persistent :set syntax for a given filetype?
...h uses Twig, and the filetypes are myfile.html.twig . Vim doesn't automatically detect the syntax highlighting and so applies none. I can use :set syntax=HTML after I've opened the file but this is a pain when jumping between files.
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Should JAVA_HOME point to JDK or JRE?
...) where utilities such as javac (the Java Compiler) reside. Otherwise, you can point to the JRE (Java Runtime Environment).
The JDK contains everything the JRE has and more. If you're just executing Java programs, you can point to either the JRE or the JDK.
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Why should I implement ICloneable in c#?
Can you explain to me why I should inherit from ICloneable and implement the Clone() method?
4 Answers
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Rails how to run rake task
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You can run Rake tasks from your shell by running:
rake task_name
To run from from Ruby (e.g., in the Rails console or another Rake task):
Rake::Task['task_name'].invoke
To run multiple tasks in the same namespace with a si...
What does |= (single pipe equal) and &=(single ampersand equal) mean
...o
x = x | y;
and the same for &. There's a bit more detail in a few cases regarding an implicit cast, and the target variable is only evaluated once, but that's basically the gist of it.
In terms of the non-compound operators, & is a bitwise "AND" and | is a bitwise "OR".
EDIT: In this ...
Convert numpy array to tuple
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This is pretty common in python because of the concept of "duck-typing" and EAFT, more here: docs.python.org/glossary.html#term-duck-typing. The advantage of this approach is that it'll convert any nested sequence into nested tuples, not just an array. One th...
How to create a loop in bash that is waiting for a webserver to respond?
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I had a specific case where using --head always returned 405. Had to remove it to make it work
– Ron Harlev
Jul 8 at 1:28
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What's the difference between the build and create methods in FactoryGirl?
...ting to DB makes testing time consuming.
e.g.
I create users to authentication with create() because my authentication engine queries the DB.
To check if a model has an attribute the build() method will do because no DB access is required.
it{Factory.build(:user).should respond_to(:name)}
Upd...
How long is the SHA256 hash?
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A sha256 is 256 bits long -- as its name indicates.
Since sha256 returns a hexadecimal representation, 4 bits are enough to encode each character (instead of 8, like for ASCII), so 256 bits would represent 64 hex characters, therefore you need a varchar(64), or even a ...