Re: Understanding Boolean Expressions

2013-04-17 Thread Steven D'Aprano
On Tue, 16 Apr 2013 15:19:25 -0700, Bruce McGoveran wrote: Hello. I am new to this group. I've done a search for the topic about which I'm posting, and while I have found some threads that are relevant, I haven't found anything exactly on point that I can understand. So, I'm taking the

Re: Understanding Boolean Expressions

2013-04-17 Thread Jussi Piitulainen
Steven D'Aprano writes: So paradoxically, that means that x or y counts as an and_test (obviously!) but also as an or_test, since every and_test also counts as an or_test. Here's some crappy ASCII art of a Venn diagram I think you mean to say that x and y counts as an and_test and also as an

Re: Understanding Boolean Expressions

2013-04-17 Thread Steven D'Aprano
On Wed, 17 Apr 2013 11:47:49 +0300, Jussi Piitulainen wrote: Steven D'Aprano writes: So paradoxically, that means that x or y counts as an and_test (obviously!) but also as an or_test, since every and_test also counts as an or_test. Here's some crappy ASCII art of a Venn diagram I think

Re: Understanding Boolean Expressions

2013-04-17 Thread Jussi Piitulainen
Steven D'Aprano steve+comp.lang.pyt...@pearwood.info writes: On Wed, 17 Apr 2013 11:47:49 +0300, Jussi Piitulainen wrote: Steven D'Aprano writes: So paradoxically, that means that x or y counts as an and_test (obviously!) but also as an or_test, since every and_test also counts as

Understanding Boolean Expressions

2013-04-16 Thread Bruce McGoveran
Hello. I am new to this group. I've done a search for the topic about which I'm posting, and while I have found some threads that are relevant, I haven't found anything exactly on point that I can understand. So, I'm taking the liberty of asking about something that may be obvious to many

Re: Understanding Boolean Expressions

2013-04-16 Thread Walter Hurry
On Tue, 16 Apr 2013 15:19:25 -0700, Bruce McGoveran wrote: Hello. I am new to this group. I've done a search for the topic about which I'm posting, and while I have found some threads that are relevant, I haven't found anything exactly on point that I can understand. So, I'm taking the

Re: Understanding Boolean Expressions

2013-04-16 Thread Dave Angel
On 04/16/2013 06:19 PM, Bruce McGoveran wrote: Hello. I am new to this group. I've done a search for the topic about which I'm posting, and while I have found some threads that are relevant, I haven't found anything exactly on point that I can understand. So, I'm taking the liberty of

Re: Understanding Boolean Expressions

2013-04-16 Thread Rhodri James
On Tue, 16 Apr 2013 23:19:25 +0100, Bruce McGoveran bruce.mcgove...@gmail.com wrote: Hello. I am new to this group. I've done a search for the topic about which I'm posting, and while I have found some threads that are relevant, I haven't found anything exactly on point that I can

Re: Understanding Boolean Expressions

2013-04-16 Thread Terry Jan Reedy
[2nd try, quotation a bit messed up] On 4/16/2013 6:19 PM, Bruce McGoveran wrote: Hello. I am new to this group. I've done a search for the topic about which I'm posting, and while I have found some threads that are relevant, I haven't found anything exactly on point that I can

Re: Understanding Boolean Expressions

2013-04-16 Thread Bruce McGoveran
Thank you all for thoughts. I'm just about to post another question about atoms and primaries. If you have a moment to look it over, I would appreciate your thoughts. Many thanks in advance. On Tuesday, April 16, 2013 6:19:25 PM UTC-4, Bruce McGoveran wrote: Hello. I am new to this group.