dynarray | Dynamic Numpy arrays | Data Manipulation library
kandi X-RAY | dynarray Summary
kandi X-RAY | dynarray Summary
Dynamically growable Numpy arrays. They function exactly like normal numpy arrays, but support appending new elements.
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- Shape tuple
- Returns the trailing dimensions
dynarray Key Features
dynarray Examples and Code Snippets
Lines of Code : 32License : Permissive (MIT)
Copyfrom dynarray import DynamicArray
array = DynamicArray()
for element in range(10):
array.append(element)
from dynarray import DynamicArray
# The leading dimension is None to denote that this is
# the dynamic dimension
array = DynamicArray((No Community Discussions
Trending Discussions on dynarray
QUESTION
I have an 'IntList' class with a dynamic array of integers, but the following fragment of test code gives me troubles:
main.cpp
...ANSWER
Answered 2021-Jun-02 at 19:53It appears (from the fragments you have shown) that there is no declaration of your << override in the header file (IntList.hpp). Thus, the code in your main function is not (and cannot be) aware of that override, which is provided in a separate source file.
You need to add a declaration of that override function in the header (tyically, just after the class definition), like this:
QUESTION
BELOW IS THE ASSIGNMENT:
Write a program to print the last element in an array of doubles. The array should have a dynamic length. The length should be taken from a command line argument. If no command line argument is provided to your program, the array length should be 5. The array should be created dynamically and filled with values starting with 0.0 -> 0.1 -> 0.2 ......
Example:
Call your program: mycalc.exe 42
Output of your program will be in this example: My last array element is: 4.1
However, when I run this code, it always shows 0.0 no matter how I change my command line argument or even I have no command line argument. What is the problem, can anybody correct my code, please. I'm in a hurry, thank you so much.
BELOW IS THE CODE I WROTE:
...ANSWER
Answered 2021-May-07 at 01:56After the loop
QUESTION
I am working with dynamic arrays, consider two scenarios - Scenario 1:
...ANSWER
Answered 2021-Apr-01 at 00:11In the second example, you're modifying data which is local to the function. Such a change is not reflected in the calling function, so dynArray doesn't change. And since you reallocated memory, if the memory moved then this pointer is now invalid and attempting to dereference it triggers undefined behavior.
You need to change the function to accept the address of a int *, i.e. an int **, for the first argument and make the corresponding changes. You'll also want to make dataIdx a int * so changes to that are also propagated back
So your function would now look like this:
QUESTION
I have an undirected graph of letters in a rectangular format, where each node has an edge to the adjacent neighboring node. For example:
...ANSWER
Answered 2021-Feb-04 at 03:22Here is a simple Depth-First Search-based procedure that attempts to find a path that creates a specified string in a grid of characters. This DFS is an example of a basic brute-force algorithm, as it simply tries all possible paths that could be right. In the below program, I use my own Graph class (sorry), but it should be simple enough to understand. Here is my code in C++:
QUESTION
In a project for class, I need to increase the capacity of a dynamic array of void pointers. Currently I'm having trouble with corrupting the users data when using realloc.
...ANSWER
Answered 2020-Oct-17 at 22:30There are multiple issues:
- You are not reallocating the element array, but the
dynarraystructure itself. - you do not store the element if you reallocate the array: if is quite error prone to separate the
elseclause as you did. - you do not check for a
0initial capacity:cap * 2would still be0.
Here is a modified version:
QUESTION
I am defining a structer for my class. Basicly i want take an input and write it to member variable(array).
...ANSWER
Answered 2020-Jun-09 at 18:37This is not how you allocate memory for the array:
QUESTION
How can I read the string value in swift of my array with a foreach ?
My code in rust is :
...ANSWER
Answered 2020-Mar-12 at 14:30You cannot use for-in on a pointer. As the error message is clearly saying you need some type conforming to Sequence.
One example of Sequence which works with pointers is UnsafeMutableBufferPointer.
You can convert the result type DynArray to UnsafeMutableBufferPointer.
QUESTION
I've implemented a dynamic array data structure in C; and i'm now looking for a proper way to fill up my arrays from stdin. Using scanf() or fgets() seems not to be a good idea, since their buffer size is fixed at compilation time i would lose the dynamicity of my structure. So i'm using getline() and allocating the memory dynamically for every char i want to put in my array.
I wrote this function to fill up two arrays from stdin:
...ANSWER
Answered 2020-Feb-01 at 23:03Something like this could work.
Only one pointer is needed for getline. Since the pointer is assigned array->memory[++array->index] = data; more memory needs to be allocated for each iteration. Set line to NULL and len to zero.
Consider breaking out of the loop when an empty line is entered. '\n' == line[0].
Free line at the very end.
QUESTION
I've been implementing the mergesort algorithm in C, based on a dynamic array structure. I followed the pseudo-code step by step but I am not getting to the point. Here's how I have defined my structure and how I create and initialize it:
...ANSWER
Answered 2020-Jan-23 at 13:12The problem is how you compare the elements:
QUESTION
I'm trying to implement the mergesort algorithm using a dynamic array structure in c, but when i call the function to split the original array instead of getting two subarrays i get a seg fault error. I'm pretty sure it has something to deal with how i define the size of my structure, but i cannot get over it. Here's how i've defined my structure and how i create and initialize it:
...ANSWER
Answered 2020-Jan-21 at 23:15The inside of the create_dynarray function
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Install dynarray
Create an empty one-dimensional array and append elements to it:.
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