Looks like this is what you want Here I’ll explain the code: This declares the size of your new 2D array. In Java (and most programming languages), your first value starts at 0, so the size of this array is actually 2 rows by 2 columns Here you are using the type String[][] to create a new … Read more
It looks like you’re confused by the double stars in The double stars just means that this function expects you to pass a pointer to a pointer to a char. This syntax doesn’t include any information about the fact that you are using an array, or that the char is actually the first char of many … Read more
Consider Column lengths differ per row. If you’re backing some data by a fixed size 2D array, then provide getters to the fixed values in a wrapper class.
Consider the following two-dimensional list: Lets break it down step by step: This list is passed into zip() using argument unpacking, so the zip call ends up being the equivalent of this: Hopefully the comments make it clear what zip does, it will group elements from each input iterable based on index, or in other words it groups the columns.
Bash does not support multidimensional arrays, nor hashes, and it seems that you want a hash that values are arrays. This solution is not very beautiful, a solution with an xml file should be better : EDIT: this answer is quite old, since since bash 4 supports hash tables, see also this answer for a solution without … Read more
If you are able to use C++11, multidimensional arrays and vectors of vectors can be initialized in a similar manner. However, there are differences that must be understood to access the elements without running into undefined behavior. For a multidimensional array, memory for the elements of the array is required to be allocated contiguously. For … Read more
In newer version of numpy (>1.8.x), numpy.meshgrid() provides a much faster implementation: @pv’s solution numpy.meshgrid() use to be 2D only, now it is capable of ND. In this case, 3D: Note that the order of the final resultant is slightly different.
Arrays in C are in the order rows then columns, so there are 6 rows of 9 integers, not 9 rows of 6 integers in the initializer for the array you defined.
There are the index tricks r_ and c_. If this is performance critical code, you might prefer to use the equivalent np.concatenate rather than the index tricks. There are also np.resize and np.ndarray.resize, but they have some limitations (due to the way numpy lays out data in memory) so read the docstring on those ones. … Read more
Use zip and itertools.chain. Something like: