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Difference between JSONObject and JSONArray
...a as a json array, then you needed to add a status header on it you'd be a bit stuck, unless you'd nested the data in an object. The only disadvantage is a slight increase in complexity of creation / parsing.
So instead of
[datum0, datum1, datumN]
You'd have
{data: [datum0, datum1, datumN]}
...
Returning a boolean from a Bash function
...e read out loud and explain their meaning. However, that last one may be a bit too ambitious because seeing the word exit might make you think it is exiting the script, when in reality it is exiting the $(...) subshell.
** If you absolutely insist on using return 1 for false, I suggest you at lea...
How do ACID and database transactions work?
...e, if you're updating a double-entry bookkeeping system, you may need to debit from several accounts and credit to several accounts at the same time. Without transactions, you would check the constraints after every statement, and would fail because the individual statements don't preserve consisten...
Default initialization of std::array?
...ean zero-initialization.
The description at cppreference.com is actually a bit misleading. std::array is an aggregate class, and if the element type is primitive, it is POD: "plain old data," with semantics closely matching the C language. The implicitly-defined constructor of std::array< int, N ...
Android Paint: .measureText() vs .getTextBounds()
... of the text to be rendered. However, the actual text rendered is always a bit wider than the .width() of the Rect information filled by getTextBounds() .
...
Bare asterisk in function arguments?
...
While the original answer answers the question completely, just adding a bit of related information. The behaviour for the single asterisk derives from PEP-3102. Quoting the related section:
The second syntactical change is to allow the argument name to
be omitted for a varargs argument. The mean...
How can I force browsers to print background images in CSS?
...
I found a way to print the background image with CSS. It's a bit dependent on how your background is laid out, but it seems to work for my application.
Essentially, you add the @media print to the end of your stylesheet and change the body background slightly.
Example, if your curre...
What are the best use cases for Akka framework [closed]
... Building off @RaymondRoestenburg re: MQ systems and alternatives. RabbitMQ, for example, is built on an actor-based programming language, Erlang. That's one way to think about the relation (and distinction) between actor and MQ. Meanwhile Apache Spark is neither worker-and-queue nor Actor-base...
“git pull” or “git merge” between master and development branches
... git pull --rebase origin master on your develop branch is a bit faster.
– Nathan Lilienthal
Apr 10 '13 at 14:33
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Which is better, number(x) or parseFloat(x)?
...') = NaN;
parseFloat(false) = NaN;
parseFloat('1a') = 1;
parseFloat is a bit slower because it searches for first appearance of a number in a string, while the Number constuctor creates a new number instance from strings that contains numeric values with whitespace or that contains false values.
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