for (EXPR .. EXPR)

[download]

is an iterator, but 

for (CONSTANT .. CONSTANT)

[download]

is actually 

my @anon;
BEGIN { @anon = (CONSTANT..CONSTANT); }
for (@anon)

[download]

Now, for (@anon) is treated more efficiently than generic lists, but I don't remember how so exactly.

In reply to Re^2: Thread::Queue memory issue with nested maps but not foreach loops... by ikegami
in thread Thread::Queue memory issue with nested maps but not foreach loops... by jmmitc06

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