¡@
c++ Programming Glossary: columnsgprof reports no time accumulated http://stackoverflow.com/questions/1030829/gprof-reports-no-time-accumulated my call graph contains all zeroes for all time columns. The values in the called columns have reasonable values so.. all zeroes for all time columns. The values in the called columns have reasonable values so it looks like something was profiled..
using OpenCV and SVM with images http://stackoverflow.com/questions/14694810/using-opencv-and-svm-with-images number of rows in the matrix would be 5 and the number of columns would be the area of the image 4 3 12. int num_files 5 int img_area..
How to use SQLite in a multi-threaded application? http://stackoverflow.com/questions/1680249/how-to-use-sqlite-in-a-multi-threaded-application A which has different groups of rows based on one of their columns . I have the main thread of the application which reads the..
1D or 2D array, what's faster? http://stackoverflow.com/questions/17259877/1d-or-2d-array-whats-faster memory layouts fit and make sense i.e. if the number of columns per row is not constant but in the most simplest and common.. a nullptr or if the rows do not have the same number of columns that is if you don't have a matrix at all but another two dimensional..
http://stackoverflow.com/questions/18841663/c-reading-in-text-file-into-vectorvector-then-writing-to-vector-or-array-dep only with floats with constant but unknown number of columns into an array . Im now moving onto the real application where..
Variable length arrays in C++? http://stackoverflow.com/questions/1887097/variable-length-arrays-in-c values really painful expression here The slices rows and columns will also potentially be spread all over memory. EDIT Looking..
How can I use a std::valarray to store/manipulate a contiguous 2D array? http://stackoverflow.com/questions/2187648/how-can-i-use-a-stdvalarray-to-store-manipulate-a-contiguous-2d-array memory for the multidimensional array to be a contiguous columns x rows block. No Java style nested arrays. c multidimensional..
At what point is it worth using a database? http://stackoverflow.com/questions/2648802/at-what-point-is-it-worth-using-a-database and lists. Sometimes the data expands from simple two columns to 8 or more. Database theory and databases can ease the complexity..
http://stackoverflow.com/questions/275484/cout-formatting in the form of a table format. What I mean by this is the columns and rows should be properly aligned. Example Test 1 Test2 2..
C++ Multi-dimensional Arrays on the Heap http://stackoverflow.com/questions/340943/c-multi-dimensional-arrays-on-the-heap that's allowed. This is nice if you know the number of columns but want to keep the number of rows variable for example. The..
Removing widgets from QGridLayout http://stackoverflow.com/questions/5395266/removing-widgets-from-qgridlayout in grid layouts then read on. About QGridLayout rows and columns First note that rowCount and columnCount return the number of.. return the number of internally allocated rows and columns. As an example if you call addWidget widget 5 7 on a freshly.. to handle layout items which span over multiple rows and columns . And finally there are some row and column attributes like..
Dealing with accuracy problems in floating-point numbers http://stackoverflow.com/questions/590822/dealing-with-accuracy-problems-in-floating-point-numbers double mw atof str The variables used in the columns calculation below are mw 4.5999999999999996 p 0.2 g 0.2.. are mw 4.5999999999999996 p 0.2 g 0.2 h 1 integer int columns int mw h 11 p h 11 p g 1 Prior to casting to an integer type.. g 1 Prior to casting to an integer type the result of the columns calculation is 1.9999999999999996 so near yet so far from the..
May I treat a 2D array as a contiguous 1D array? http://stackoverflow.com/questions/7269099/may-i-treat-a-2d-array-as-a-contiguous-1d-array indexing the 1234th element of the zeroth row of only 80 columns. Some interpret the only valid indices to be 0..79 p 80 being..
get 3d coord from 2d image pixel if we know extrinsic and intrinsic parameters http://stackoverflow.com/questions/7836134/get-3d-coord-from-2d-image-pixel-if-we-know-extrinsic-and-intrinsic-parameters it is redundat as it is the crossproduct of the 2 first columns of pose. Now that you have homography project the points. Your..
Why is splitting a string slower in C++ than Python? http://stackoverflow.com/questions/9378500/why-is-splitting-a-string-slower-in-c-than-python with a 20M line text file with three space separated columns that each look similar to this foo.bar 127.0.0.1 home.foo.bar..
|