# API option 1

# Assume this is implemented as a small bit of rpython
# Returns a list object; almost always empty
def get_queued_items():
    return [...]

# App-level usage:
items = get_queued_items()
if items:
    # do something rare and expensive
    ...

# API option 2

# Assume these are both implemented as small bits of rpython
def has_queued_items():
    return bool(...)

def get_queued_items():
    return [...]

# App-level usage:
if has_queued_items():
    # do something rare and expensive
    items = get_queued_items()
    ...

# Question: API option 2 naively seems a bit easier for the JIT to optimize, because it's "obvious"
# that you don't need to allocate a list object etc. Is that true?
#
# Or is it trivial for the JIT to optimize option 1 into the same thing as it would do for
# option 2?