Iterators - language feature

Example from 1 languages: Python

https://www.w3schools.com/python/python_iterators.asp

Example from 1 languages: Java

Iterator iter = list.iterator();
//Iterator<MyType> iter = list.iterator();    in J2SE 5.0
while (iter.hasNext()) {
    System.out.print(iter.next());
    if (iter.hasNext())
        System.out.print(", ");
}

Example from 1 languages: C++

std::vector<int> items;
items.push_back(5);  // Append integer value '5' to vector 'items'.
items.push_back(2);  // Append integer value '2' to vector 'items'.
items.push_back(9);  // Append integer value '9' to vector 'items'.

for (auto it = items.begin(); it != items.end(); ++it) {  // Iterate through 'items'.
  std::cout << *it;  // And print value of 'items' for current index.
}

Example from 1 languages: Ruby

(0...42).each do |n|
  puts n
end

Example from 1 languages: Rust

for n in 0..42 {
  println!("{}", n);
}

Example from 1 languages: MATLAB

% Define an array of integers
myArray = [1,3,5,7,11,13];

for n = myArray
   % ... do something with n
   disp(n)  % Echo integer to Command Window
end

Example from 1 languages: Speedie

|| items = [5,6,7,8]
for i in items
 printline i

Languages with Iterators include Python, Java, C++, Ruby, Rust, MATLAB, Speedie

Languages without Iterators include progsbase

View all concepts with or missing a hasIterators measurement

Read more about Iterators on the web: 1.