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Possible to perform cross-database queries with PostgreSQL?
...no longer supported, but if you need to do this in a pre-2013 Postgres installation, there is a function called dblink.
I've never used it, but it is maintained and distributed with the rest of PostgreSQL. If you're using the version of PostgreSQL that came with your Linux distro, you might need to...
Convert string with comma to integer
...application, when converting a currency amount that the user has input, in order to deal with only integers inside the application: for instance, converting dollars and cents to cents. This method will avoid any rounding errors that might crop up unexpectedly when dealing with floating-point numbers...
What is the difference between 'typedef' and 'using' in C++11?
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All standard references below refers to N4659: March 2017 post-Kona working draft/C++17 DIS.
Typedef declarations can, whereas alias declarations cannot, be used as initialization statements
But, with the first two non-temp...
Receive result from DialogFragment
...TargetFragment(this, 1);
sets a target Fragment and not Activity. So in order to do this you need to use implement an InterfaceCommunicator.
In your DialogFragment set a global variable
public InterfaceCommunicator interfaceCommunicator;
Create a public function to handle it
public interfa...
Understanding the ngRepeat 'track by' expression
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a short summary:
track by is used in order to link your data with the DOM generation (and mainly re-generation) made by ng-repeat.
when you add track by you basically tell angular to generate a single DOM element per data object in the given collection
this co...
Best exception for an invalid generic type argument
...ons using ildasm/ilasm ...
... it seems like a new Exception might be in order despite the high burden of proof we justly have to meet before creating custom Exceptions. Something like InvalidTypeParameterException might be useful throughout the library (or maybe not - this is surely an edge case...
Array or List in Java. Which is faster?
...ter than getting from an ArrayList, although the difference is only on the order of one nanosecond.
set operations
I ran 2 tests, executing the following statements:
setList: list.set(0, value);
setArray: array[0] = value;
Results (in nanoseconds per call):
a.p.g.a.ArrayVsList.setArray [4.201, 4...
Reasons for using the set.seed function
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Adding options to select with javascript
...delay...), an approach extending the prototype of the HTMLSelectElement in order to chain the populate() function, as a method, to the DOM node:
HTMLSelectElement.prototype.populate = function (opts) {
var settings = {};
settings.min = 0;
settings.max = settings.min + 100;
for (va...
Switch statement for string matching in JavaScript
...cular two key aspects: First, that the cases are considered in source text order, and second that the selector expressions (the bits after the keyword case) are expressions that are evaluated as that case is evaluated (not constants as in some other languages). So since our test expression is true, ...