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For loop

Refer to Starlark for loop specification for details.

iterating with values

array:
#@ for i in range(0,3):
- #@ i
- #@ i+1
#@ end

iterating with index

array:
#@ arr = [1,5,{"key":"val"}]
#@ for i in range(len(arr)):
- val: #@ arr[i]
  index: #@ i
#@ end

use of continue/break

array:
#@ for i in range(0,3):
#@   if i == 1:
#@     continue
#@   end
- #@ i
- #@ i+1
#@ end

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