Editing Foreach loop (section)

=== Groovy ===
[[Groovy (programming language)|Groovy]] supports ''for'' loops over collections like arrays, lists and ranges:

<syntaxhighlight lang="Groovy">
def x = [1,2,3,4]
for (v in x)           // loop over the 4-element array x
{
    println v
}

for (v in [1,2,3,4])   // loop over 4-element literal list 
{
    println v
}

for (v in 1..4)        // loop over the range 1..4
{
    println v
}
</syntaxhighlight>

Groovy also supports a C-style for loop with an array index:

<syntaxhighlight lang="Groovy">
for (i = 0; i < x.size(); i++)
{
    println x[i]
}
</syntaxhighlight>

Collections in Groovy can also be iterated over using the ''each'' keyword
and a closure. By default, the loop dummy is named ''it''

<syntaxhighlight lang="Groovy">
x.each{ println it }     // print every element of the x array
x.each{i-> println i}    // equivalent to line above, only loop dummy explicitly named "i"
</syntaxhighlight>