[Zeek] Sorting a vector of intervals.

[Tomek Koziak]

Hi All,
When I try to run the following code

event zeek_init()
{
local v: vector of interval = vector(1min,2min,1min,4min,6min,1min);
local vo : vector of interval = sort(v);
    for (i in vo){
    print vo[i];
    }
}

I get the expected output by as well I obtain the following error:
line 4: comparison function required for sort() with non-integral types
(sort(v)) fatal error: errors occurred while initializing

I have followed the documentation.
https://docs.zeek.org/en/current/scripts/base/bif/zeek.bif.zeek.html#sort
But I quite don't understand the part about the comparison function as a
second argument. What parameter should be placed as a second argument?
<https://docs.zeek.org/en/current/scripts/base/bif/zeek.bif.zeek.html#sort>

Tomasz
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