On Thursday, 14 July 2016 at 10:43:12 UTC, Sahil wrote:
This is with reference to documentation about use of array in D
(https://dlang.org/spec/arrays.html#array-setting).
In languages tailor-made for data mining, like R, a subset of
an array (not necessarily contiguous values) can be extracted
as shown below:
vec //a vector or array in R
c(1:length(vec))[vec > 3] //extract a new array having values
of vec that are greater than 3.
I have read about slicing, but it can only subset contiguous
values. Correct me if I am wrong here.
How can the above functionality be achieved in D ?
(I am totally new to D)
easily. The function you are looking for is called 'filter'
import std.algorithm;
import std.array;
int[] a = [ 4,5,8,1,3,2,9,10];
auto b = a.filter!(e => e>3).array; //b contains the elements
4,5,8,9,10
