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Why do results vary based on curly brace placement?
... terminated, so your first example looks effectively like this:
function test()
{
return; // <- notice the inserted semicolon
{
javascript: "fantastic"
};
}
See also Douglas Crockford's JS style guide, which mentions semicolon insertion.
In your second example you return an object...
LINQ: Not Any vs All Don't
...in fairness, I think they've a bit of a point in that I often find if(!someTest) confusing* when there's an alternative test of equal verbosity and complexity that would return true for the condition we want to act upon. Yet really, I personally find nothing to favour one over the other of the two a...
How to convert a string to an integer in JavaScript?
...
Fastest
var x = "1000"*1;
Test
Here is little comparison of speed (Mac Os only)... :)
For chrome 'plus' and 'mul' are fastest (>700,000,00 op/sec), 'Math.floor' is slowest. For Firefox 'plus' is slowest (!) 'mul' is fast...
What is the fastest substring search algorithm?
...
Build up a test library of likely needles and haystacks. Profile the tests on several search algorithms, including brute force. Pick the one that performs best with your data.
Boyer-Moore uses a bad character table with a good suffix...
Large-scale design in Haskell? [closed]
...Int, Address)
Good data structures (like zippers) can make some classes of testing needless, as they rule out e.g. out of bounds errors statically.
The profiler
Provide objective evidence of your program's heap and time profiles.
Heap profiling, in particular, is the best way to ensure no unnece...
In C#, how do I calculate someone's age based on a DateTime type birthday?
...
Here is a test snippet:
DateTime bDay = new DateTime(2000, 2, 29);
DateTime now = new DateTime(2009, 2, 28);
MessageBox.Show(string.Format("Test {0} {1} {2}",
CalculateAgeWrong1(bDay, now), // outputs 9
...
What is the most efficient way to create HTML elements using jQuery?
...cument.createElement('div')); Benchmarking shows this technique is the fastest. I speculate this is because jQuery doesn't have to identify it as an element and create the element itself.
You should really run benchmarks with different Javascript engines and weigh your audience with the results. ...
How to detect page zoom level in all modern browsers?
... and blog posts I could find, here's a summary. I also set up this page to test all these methods of measuring the zoom level.
Edit (2011-12-12): I've added a project that can be cloned: https://github.com/tombigel/detect-zoom
IE8: screen.deviceXDPI / screen.logicalXDPI (or, for the zoom level re...
Avoiding if statement inside a for loop?
...rry about in terms of performance
In this case I advocate for keeping the test inside the loop for clarity.
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What is the difference between a map and a dictionary?
...lements that can support the insertion and deletion of elements as well as test for membership
For example, we have a set of elements { A, B, C, D... } that we've been able to insert and could start deleting, and we're able to query "is C present?".
The Computing Science notion of map though is b...