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c# Programming Glossary: intersectCheck if list<t> contains any of another list http://stackoverflow.com/questions/11092930/check-if-listt-contains-any-of-another-list would be to project parameters to source and then use Intersect which internally uses a HashSet T so instead of O n^2 for the.. check in O n bool hasMatch parameters.Select x x.source .Intersect myStrings .Any Also as a side comment you should capitalize..
How to find the minimum covariant type for best fit between two types? http://stackoverflow.com/questions/14472103/how-to-find-the-minimum-covariant-type-for-best-fit-between-two-types ax x false Array.Exists ay y y.Equals x static T Intersect T this T ax T ay return Array.FindAll ax x Array.Exists ay y.. static int GetOverlappedCount T this T ax T ay return ay.Intersect ax .Length static Comparison Type CoverageComparison this Type.. this Type type1 Type type2 var array type2.GetTypesArray .Intersect type1.GetTypesArray var typeCurrent default Type for var i array.Length..
http://stackoverflow.com/questions/204505/preserving-order-with-linq Order. Elements are filtered but not re ordered. Except Intersect OfType Skip SkipWhile Take TakeWhile Where Zip new in .net 4..
Detecting coincident subset of two coincident line segments http://stackoverflow.com/questions/2255842/detecting-coincident-subset-of-two-coincident-line-segments could design a C# function like this public static PointF Intersection PointF a1 PointF a2 PointF b1 PointF b2 where a1 a2 is one.. your method signature becomes much more clear static Locus Intersect LineSegment l1 LineSegment l2 This method takes two line segments.. of loci. Therefore you could actually write static Locus Intersect Locus l1 Locus l2 And hey now it becomes clear that Intersect..
What guarantees are there on the run-time complexity (Big-O) of LINQ methods? http://stackoverflow.com/questions/2799427/what-guarantees-are-there-on-the-run-time-complexity-big-o-of-linq-methods Join and I believe also the set aggregation methods Union Intersect and Except use hashing so they should be close to O N instead..
compare two folders for non identical files with SymmetricDifference? http://stackoverflow.com/questions/4415674/compare-two-folders-for-non-identical-files-with-symmetricdifference the intersection of the two sets of filenames just use the Intersect extension method . From that you can list differences var differentLengths..
http://stackoverflow.com/questions/5620266/the-opposite-of-intersect opposite of Intersect Intersect can be used to find matches between two collections.. opposite of Intersect Intersect can be used to find matches between two collections like so.. Assign two arrays. int array1 1 2 3 int array2 2 3 4 Call Intersect extension method. var intersect array1.Intersect array2 Write..
How can I tell if a point belongs to a certain line? http://stackoverflow.com/questions/907390/how-can-i-tell-if-a-point-belongs-to-a-certain-line check for equality. Given Point p X 4 Y 5 Line l Slope 1 YIntersect 1 Plug in X and Y Y Slope X YIntersect 5 1 4 1 5 5 So yes the.. Y 5 Line l Slope 1 YIntersect 1 Plug in X and Y Y Slope X YIntersect 5 1 4 1 5 5 So yes the point is on the line. If your lines are.. calculate slope with Slope y1 y2 x1 x2 And then get the Y Intersect with this Y Intersect Slope X1 Y1 You'll have to check that..
How to intersect two polygons? http://stackoverflow.com/questions/1526352/how-to-intersect-two-polygons to intersect two polygons This seems non trivial it gets asked quite a lot.. convex. Output 3 polygons representing A B and the intersecting polygon AB. Either of which may be an empty polygon e.g... floor boundaries. So the room boundary will normally fully intersect with the floor boundary unless it belongs to another floor on..
Finding the overlapping area of two rectangles (in C#) http://stackoverflow.com/questions/1551243/finding-the-overlapping-area-of-two-rectangles-in-c way to check And for calculating the area where they intersect is there an quick way to do it if the rectangles only horizontal.. the Rectangle.Intersect method do the job It returns the intersecting area and then you can easily calculate the area of it. share..
Detecting coincident subset of two coincident line segments http://stackoverflow.com/questions/2255842/detecting-coincident-subset-of-two-coincident-line-segments This question is related to How do I determine the intersection point of two lines in GDI great explanation of algebra but.. but no code How do you detect where two line segments intersect accepted answer doesn't actually work But note that an interesting.. result points or null if the lines are parallel or do not intersect infinite lines intersect but line segments are disjoint or lines..
http://stackoverflow.com/questions/5620266/the-opposite-of-intersect 2 3 int array2 2 3 4 Call Intersect extension method. var intersect array1.Intersect array2 Write intersection to screen. foreach.. method. var intersect array1.Intersect array2 Write intersection to screen. foreach int value in intersect Console.WriteLine.. array2 Write intersection to screen. foreach int value in intersect Console.WriteLine value Output 2 3 However what I'd like to..
http://stackoverflow.com/questions/6837675/timespan-intersection-in-c-sharp intersection in c# Let's say i have 2 date ranges. Those date ranges.. 5 2 2011 5 28 2011 timespan of 26 days so in this case the intersection would be 5 2 2011 5 28 2011 but the ranges could move in.. 2011 but the ranges could move in either direction or not intersect at all in which case i'd want the resulting timespan to be 0..
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