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limited_loop

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... in limited_loop.naml
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<macro name="limited_loop" requires="sequence" dot_parameter="do" parameters="start,length,by,if_truncated">
  <n.comment.>
    Allows one to loop through part of a list, skipping the rest of it.
  </n.comment.>
  <n.set_var. name="max">
    <n.int. i="[n.default. to='0'][n.start/][/n.default.]">
      <n.plus i="[n.default. to='9999'][n.length/][/n.default.]"/>
    </n.int.>
  </n.set_var.>
  <n.while>
    <condition.both>
      <condition1.next_element inc="[n.by/]"/>
      <condition2.is_less_than value1="[n.current_index/]" value2="[n.var name='max'/]"/>
    </condition.both>
    <loop>
      <n.if.not.is_less_than value1="[n.current_index/]" value2="[n.start/]">
        <then.do/>
      </n.if.not.is_less_than>
    </loop>
  </n.while>
  <n.if.is_less_than value1="[n.current_index/]" value2="[n.element_count/]">
    <then.falsy_to_empty.if_truncated/>
  </n.if.is_less_than>
</macro>
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