vector Questions
6
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With CPU caches becoming better and better std::vector usually outperforms std::list even when it comes to testing the strengths of a std::list. For this reason, even for situations where I need to...
Distinguished asked 8/11, 2016 at 14:31
7
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Suppose I have the following vector:
x <- c(8, 6, 9, 9, 7, 3, 2, 5, 5, 1, 6, 8, 5, 2, 9, 3, 5, 10, 8, 2)
How can I find which elements are either 8 or 9?
2
In rust I would like to have a vec containing items which implement 2 traits. However when I try to implement it like so, I get the error only auto traits can be used as additional traits in ...
2
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Is there a fast way in numpy to add a vector to every row or column of a matrix.
Lately, I have been tiling the vector to the size of the matrix, which can use a lot of memory. For example
mat=n...
5
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Is using a vector of boolean values slower than a dynamic bitset?
I just heard about boost's dynamic bitset, and I was wondering is it worth
the trouble. Can I just use vector of boolean values in...
7
This question is a continuation of this one.
I think that STL misses this functionality, but it just my IMHO.
Consider following code:
class Foo
{
public:
Foo();
int paramA, paramB;
std::string ...
Ultrastructure asked 5/4, 2013 at 21:4
10
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iterator insert ( iterator position, const T& x );
Is the function declaration of the insert operator of the std::Vector class.
This function's return type is an iterator pointing to the ins...
Ensheathe asked 19/11, 2010 at 15:44
3
I would like to be able to add a dropshadow to vectors that I have in my drawables folder. Currently, when I import the svg which has a dropshadow into Android Studio, the conversion to xml removes...
2
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I'm new to R and am having trouble (1) generalizing previous stack overflow answers to my situation, and (2) understanding R documentation. So I turn to this community and hope someone will walk me...
5
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I've been reading Accelerated C++ and I have to say it's an interesting book.
In chapter 6, I have to use a function from <algorithm> to concatenate from a vector<string> into a single...
2
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As I see here there is a fast and short way to Convert vector to string separated with a character in c#:
var result = string.Join(";", data);
var result = string.Join(";", data.Select(x => x....
1
I'm trying to make an Android vector animation, which contains a rotation on a vectorial group. Basically, if the degree transition would be constant, I would use those resources:
My VectorDrawabl...
3
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As the title says, I want to add an element to a std::vector in certain cases while iterating through the vector. With the following code, I'm getting an error "Debug assertion failed". Is it possi...
4
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I'm trying to implement a line segment and plane intersection test that will return true or false depending on whether or not it intersects the plane. It also will return the contact point on the p...
Dramamine asked 23/8, 2011 at 22:52
1
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I would like to know if it is possible to get all the indexes that fulfill a condition in a rust vector datatype. I know the trait operator provides a method to find the first element that does it:...
6
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3
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I'm new in Rust and i'm trying to allocate computational work to threads.
I have vector of strings, i would want to create to each string one thread to do his job. There's simple code:
use std::thr...
Doubleness asked 19/2, 2022 at 4:14
5
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I want to generate vectors with all possible combinations of vector elements where a consecutive multiple occurrences of an element is considered as single occurrence of that element.
Simple cases
...
Doralyn asked 10/2, 2022 at 16:13
1
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Wanted to implement type safe matrix multiplication in Haskell.
Defined the following:
{-# LANGUAGE TypeFamilies, DataKinds, GADTs #-}
module Vector where
data Nat = Succ Nat | Zero
data Vector (...
Featherston asked 17/2, 2022 at 13:58
2
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I'm working on a VR game in Unreal Engine 4 using Blueprints.
I want to calculate the (yaw) angle the user needs to turn his/her gun (whose direction is determined via the position of the motion c...
Purgation asked 25/6, 2019 at 7:39
1
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Lets say I have the data to render two overlaying bezier-based shapes, that are overlapping, displayed in a svg or on the canvas (doesn't really matter where). I would like to calculate the outline...
Settles asked 11/2, 2022 at 8:38
4
I would like to compare vector with an array. Elements in vector and in array are in different order, unsorted and can duplicated. E.g.
Below are the same:
vector<int> lvector = {5,7,3,1,2...
Patmos asked 17/6, 2015 at 5:40
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I am almost certain this should be a duplicate but I searched for some time and could not find the answer. What should I use in C# to replace C++ vector and deque efficiently. That is I need a stru...
7
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I have a vector and want to find the position of the first value that is greater than 100.
2
Can I create a unordered_set of vectors in C++? something like this
std::unordered_set<std::vector<int>> s1;
because I know that is possible with the "set" class of the std lib but s...
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