Top "Iteration" questions

How can you iterate over the elements of an std::tuple?

How can I iterate over a tuple (using C++11)? I tried the following: for(int i=0; i<std::tuple_…

c++ c++11 iteration template-meta-programming stdtuple

"For" loop first iteration

I would like to inquire if there is an elegant pythonic way of executing some function on the first loop …

python algorithm iteration

Concurrent Modification Exception : adding to an ArrayList

The problem occurs at Element element = it.next(); And this code which contains that line, is inside of an OnTouchEvent …

java android exception arraylist iteration

How to iterate over an array and remove elements in JavaScript

I have an array of elements and need to remove certain ones from it. The problem is that JavaScript doesn't …

javascript iteration bounds

Focus next input once reaching maxlength value

How can I focus the next input once the previous input has reached its maxlength value? a: <input type="…

javascript jquery iteration counter

In R, how do you loop over the rows of a data frame really fast?

Suppose that you have a data frame with many rows and many columns. The columns have names. You want to …

r performance dataframe iteration rows

Reverse iteration through ArrayList gives IndexOutOfBoundsException

When I reverse iterate over an ArrayList I am getting a IndexOutOfBoundsException. I tried doing forward iteration and there is …

java arraylist iteration reverse

Ruby each_with_index offset

Can I define the offset of the index in the each_with_index loop iterator? My straight forward attempt failed: …

ruby iteration

Java : Iteration through a HashMap, which is more efficient?

Given the following code, with two alternative ways to iterate through it, is there any performance difference between these two …

java map performance hashmap iteration

Why can't we assign a foreach iteration variable, whereas we can completely modify it with an accessor?

I was just curious about this: the following code will not compile, because we cannot modify a foreach iteration variable: …

c# foreach iteration accessor