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What are '$$' used for in PL/pgSQL
...Insert text with single quotes in PostgreSQL
As to your second question:
Read the most excellent manual on CREATE FUNCTION to understand the last line of your example.
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How to construct a REST API that takes an array of id's for the resources
...fo, I prefer id=id1,id2,id3 because it makes the URI shorter and easier to read (by a human, during a debugging operation for example). Individual parameters for each value would make the URI especially harder to follow if there are other parameters between ids: api.com/users?id=id1&id=id2&j...
What should every JavaScript programmer know? [closed]
...hem; using them with inline anonymous function expressions to get compact, readable code.
The flow of control between the browser and user code; synchronous and asynchronous execution; events that fire inside the flow of control (eg. focus) vs. events and timeouts that occur when control returns; ho...
Unable to update the EntitySet - because it has a DefiningQuery and no element exis
...ption is to add a primary key to the table. Full stop. If you can do this, read no further.
But if you can't, or just hate yourself, there's a way to do it without the primary key.
In my case, I was working with a legacy system (originally flat files on a AS400 ported to Access and then ported to ...
Why should I avoid std::enable_if in function signatures
...template parameter approach has at least two advantages over the others:
readability: the enable_if use and the return/argument types are not merged together into one messy chunk of typename disambiguators and nested type accesses; even though the clutter of the disambiguator and nested type can b...
Gulp.js task, return on src?
...so it's async.
Without it the task system wouldn't know when it finished. Read the docs.
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Difference between Label and TextBlock
...keys
Label is much heavier than TextBlock
Source
Some more interesting reads below
http://www.wpfwiki.com/WPF%20Q4.1.ashx
What is the difference between the WPF TextBlock element and Label control?
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Semaphore vs. Monitors - what's the difference?
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A Monitor is an object designed to be accessed from multiple threads. The member functions or methods of a monitor object will enforce mutual exclusion, so only one thread may be performing any action on the object at a given time. If one thread is currently executing a member function o...
Multiple arguments vs. options object
...ist of parameters, but it really depends on the exact context.
I use code readability as the litmus test.
For instance, if I have this function call:
checkStringLength(inputStr, 10);
I think that code is quite readable the way it is and passing individual parameters is just fine.
On the other ...
How do C++ class members get initialized if I don't do it explicitly?
...uble=10.765;
};
I use this form pretty much exclusively, although I have read some people consider it 'bad form', perhaps because it was only recently introduced - I think in C++11. To me it is more logical.
Another useful facet to the new rules is how to initialize data-members that are themsel...