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How does Dijkstra's Algorithm and A-Star compare?
...f each node is calculated by f(x)=g(x)+h(x)
A* search only expands a node if it seems promising. It only focuses to reach the goal node from the current node, not to reach every other nodes. It is optimal, if the heuristic function is admissible.
So if your heuristic function is good to approximat...
How to write an async method with out parameter?
...ect.
The only way to have supported out-by-reference parameters would be if
the async feature were done by a low-level CLR rewrite instead of a
compiler-rewrite. We examined that approach, and it had a lot going
for it, but it would ultimately have been so costly that it'd never
have happe...
Can't use modulus on doubles?
...
@Paul: That's probably not a bug. If angle is, say, 359.9999999, then both angle and fmod(angle, 360) are likely to be displayed as 360. (Add more 9s as needed.) Try printing the values with, say, 50 digits of precision.
– Keith Thompson...
Suppress properties with null value on ASP.NET Web API
...onSerializerSettings {NullValueHandling = NullValueHandling.Ignore};
Or, if you want more control, you can replace entire formatter:
var jsonformatter = new JsonMediaTypeFormatter
{
SerializerSettings =
{
NullValueHandling = NullValueHandling.Ignore
}
};
config.Formatters.Rem...
'any' vs 'Object'
... therefore the transpiler will generate an error telling you exactly that. If you use any instead you are basically telling the transpiler that anything goes, you are providing no information about what is stored in a - it can be anything! And therefore the transpiler will allow you to do whatever y...
Find size of an array in Perl
I seem to have come across several different ways to find the size of an array. What is the difference between these three methods?
...
Get the distance between two geo points
...ns the distance between the first and last point but in a rectal line , so if you take any other directions from point a to b its gonna never be accuarated since the path is different, thats when distanceBetween joins in, you can save each distance between the points beign created and then with the ...
How to align this span to the right of the div?
...
If you can modify the HTML: http://jsfiddle.net/8JwhZ/3/
<div class="title">
<span class="name">Cumulative performance</span>
<span class="date">20/02/2011</span>
</div>
.title .date ...
Drawable image on a canvas
...ly bitmaps. And it also means that you can re-use that same drawable again if only the size changes.
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Create a File object in memory from a string in Java
...ethod accepts a file, there's another method nearby that accepts a stream. If this isn't the case, the API is badly coded. Otherwise, you can use temporary files, where permission is usually granted in many cases. If it's applet, you can request write permission.
An example:
try {
// Create te...