I could not understand how constant pragma works when we are providing more than one constant like below

use constant {
STRAIGHT_LINE_ID => 1,
PRORATED_ID      => 2,
CBP_CUSTOM_ID    => 3};
print STRAIGHT_LINE_ID;

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Instead of providing 

use constant STRAIGHT_LINE_ID => 1;
use constant PRORATED_ID => 2;
use constant CBP_CUSTOM_ID => 3}

[download]

my point is that while "{}" is used for hash reference but how it is taking and works

In reply to How Constant pragma works with multi constants by manorhce

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