brain twister

[Craig Markwardt <craigmnet(at)cow.physics.wisc.edu>]

Okay, enough ideology for one week.  Here are some brain twisters for
you.  See if you can decide what the output should be without running
it.  In each example I give the commands to paste into the command
line, ending with some main-level commands to enter.

----- Example 1
.comp
pro test1, x, y
  help, x, y
end

a = dindgen(5)
test1, a, a

----- Example 2
.comp
function test2, x
  return, x
end

a = dindgen(5)
(test2(a))[2] = -2
print, a

These were a bit of a surprise for me!
Craig


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Craig B. Markwardt, Ph.D.         EMAIL:    craigmnet@cow.physics.wisc.edu
Astrophysics, IDL, Finance, Derivatives | Remove "net" for better response
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