For Loop

If you need to loop over a static collection it is common to write :

for (int i = 0; i < items.length; i++)
{
...... //do something
}

but if your items collection is very large this code has a small overhead. Because you have to check the length property in every steps and because it uses a reference to the length property it brings a performance penalty. For this situation I used the technique below:

for (int i = 0, len = items.length; i < len; i++)
{
...... //do something
}


This way you just check the items.length property once.