RE: Error Testing a List on input
- To: mathgroup at smc.vnet.net
- Subject: [mg37721] RE: [mg37685] Error Testing a List on input
- From: "David Park" <djmp at earthlink.net>
- Date: Sat, 9 Nov 2002 00:30:45 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
Flip,
Something like this.
fliptest = Head[#] === Integer && 0 <= # <= 9 &;
list1 = {1.0, 3, 7, 14, 2.5};
list2 = {2, 7, 3, 6, 5};
fliptest /@ list1
And @@ %
{False, True, True, False, False}
False
And @@ fliptest /@ list2
True
David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/
From: flip [mailto:flip_alpha at safebunch.com]
To: mathgroup at smc.vnet.net
Hello,
I was wondering if there is an easy way to do this.
I want to input a list of nine numbers. I would like to test each element in
the list prior to acting upon it.
This ends up being a sort of error check on the list prior to manipulating
it, if it is wrong, produce an error message or do nothing with the module.
So, I would like to test each element to be a. an integer, b. >= 0, c. <= 9.
Is there a way to test this list at the input prior to acting upon it?
Thanks, Flip