The structure std::vec::Vec has method append(): fn append(&mut self, other: &mut Vec<T>) Moves all the elements of other into Self, leaving other empty. From your example, the following code will concatenate two vectors by mutating a and b: fn main() { let mut a = vec![1, 2, 3]; let mut b = vec![4, 5, 6]; … Read more
Your variable x does not contain an array but a type. x = Vector{Float64} typeof(x) # DataType You can create an array as Array(Float64, n) (but beware, it is uninitialized: it contains arbitrary values) or zeros(Float64, n), where n is the desired size. Since Float64 is the default, we can leave it out. Your example … Read more
It’s very important programming skill to learn how to create a minimal, reproducible example. Your problem can be reduced to this: struct Vocabulary; fn main() { let numbers = vec![Vocabulary]; let other_numbers: Vec<Vocabulary> = numbers.iter().collect(); } Let’s look at the error message for your case: error[E0277]: a collection of type `std::vec::Vec<Vocabulary>` cannot be built from … Read more
1) Skip gram method: paper here and the tool that uses it, google word2vec 2) Using LSTM-RNN to form semantic representations of sentences. 3) Representations of sentences and documents. The Paragraph vector is introduced in this paper. It is basically an unsupervised algorithm that learns fixed-length feature representations from variable-length pieces of texts, such as … Read more
assoc works fine for that. It takes the index where to put the new value and return the newly created vector: Clojure> (assoc [1 2 3] 1 5) [1 5 3]
Vectors are not designed for prepending. You have only O(n) prepend: user=> (into [:foo] [:bar :baz]) [:foo :bar :baz] What you want is most likely a finger tree.
There’s a method that does exactly this: Vec::extend_from_slice Example: let s = [0u8, 1, 2]; let mut v = Vec::new(); v.extend_from_slice(&s);
Since Rust 1.11, you can sum the iterator directly, skipping fold: let sum: u32 = vec![1, 2, 3, 4, 5, 6].iter().sum(); You’ve already figured out that += is the problem, but I’d like to provide some more exposition. In your case, the arguments provided to the fold closure are _ and &u32. The first type … Read more
For any vector V = (x, y, z), |V| = sqrt(x*x + y*y + z*z) gives the length of the vector. When we normalize a vector, we actually calculate V/|V| = (x/|V|, y/|V|, z/|V|). It is easy to see that a normalized vector has length 1. This is because: | V/|V| | = sqrt((x/|V|)*(x/|V|) + … Read more
Because the operation does not need to consume the vector¹, I think it should not consume it. That only leads to extra copying somewhere else in the program: use std::collections::HashSet; use std::iter::FromIterator; fn hashset(data: &[u8]) -> HashSet<u8> { HashSet::from_iter(data.iter().cloned()) } Call it like hashset(&v) where v is a Vec<u8> or other thing that coerces to … Read more