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Best way to add Activity to an Android project in Eclipse?
When adding an activity to an existing Android project, I manually create a new class - is that the best / preferred way? How do others handle that?
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Group query results by month and year in postgresql
...he "date" attribute.
sum("Sales") as "Sales" : The SUM() function adds up all the "Sales" values, and supplies a case-sensitive alias, with the case sensitivity maintained by using double-quotes.
group by 1,2 : The GROUP BY function must contain all columns from the SELECT list that are not part o...
How do I find out which DOM element has the focus?
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Use document.activeElement, it is supported in all major browsers.
Previously, if you were trying to find out what form field has focus, you could not. To emulate detection within older browsers, add a "focus" event handler to all fields and record the last-focused field...
Why does the arrow (->) operator in C exist?
...as two questions: 1) why -> even exists, and 2) why . does not automatically dereference the pointer. Answers to both questions have historical roots.
Why does -> even exist?
In one of the very first versions of C language (which I will refer as CRM for "C Reference Manual", which came with ...
Why can't strings be mutable in Java and .NET?
...ctly one state, the state in which it was created. If you make sure
that all constructors establish class invariants, then it is
guaranteed that these invariants will remain true for all time, with
no effort on your part.
[...]
Immutable objects are inherently thread-safe; they requi...
How to sum up an array of integers in C#
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int sum = arr.AsParallel().Sum(); a faster version that uses multiple cores of the CPU. To avoid System.OverflowException you can use long sum = arr.AsParallel().Sum(x => (long)x); For even faster versions that avoid overflow exception and s...
Load “Vanilla” Javascript Libraries into Node.js
... have some functionality I would like to use in a Node.js server. (Specifically I want to use a QuadTree javascript library that I found.) But these libraries are just straightforward .js files and not "Node.js libraries".
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Is there a way to make AngularJS load partials in the beginning and not at when needed?
...cs.angularjs.org/api/ng.directive:script) to put your partials in the initially loaded HTML
You could also fill in $templateCache (http://docs.angularjs.org/api/ng.$templateCache) from JavaScript if needed (possibly based on result of $http call)
If you would like to use method (2) to fill in $tem...
Border around specific rows in a table?
...at can put a border around specific rows in a table. Yes, I know I'm not really supposed to use tables for layout but I don't know enough CSS to completely replace it yet.
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XSD - how to allow elements in any order any number of times?
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basically yes, i am looking for elements child1, child2 to appear in any order, any number of times.. the answer you provided here only works for single element, right? or does this solve my requirement also?
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