Grant Edwards :
> Who uses + for disjunction (∨ OR) and concatenation for
> conjunction (∧ AND)? That's crazy notation.
>
> AFAIK, that's the standard notation in both CS and EE university
> classes in the US also: + for 'or' and dot or abuttal for 'and'.
Besides, it's no crazier for Bool
On 2014-09-05, Denis McMahon wrote:
> On Thu, 04 Sep 2014 21:42:56 +1000, Chris Angelico wrote:
>> On Thu, Sep 4, 2014 at 9:17 PM, Denis McMahon
>> wrote:
>>> On Wed, 03 Sep 2014 07:16:34 +, Steven D'Aprano wrote:
>>>
Who uses + for disjunction (∨ OR) and concatenation for conjunction
>
On Fri, Sep 5, 2014 at 12:53 PM, Denis McMahon wrote:
> On Thu, 04 Sep 2014 21:42:56 +1000, Chris Angelico wrote:
>
>> On Thu, Sep 4, 2014 at 9:17 PM, Denis McMahon
>> wrote:
>>> On Wed, 03 Sep 2014 07:16:34 +, Steven D'Aprano wrote:
>>>
Who uses + for disjunction (∨ OR) and concatenatio
On Thu, 04 Sep 2014 21:42:56 +1000, Chris Angelico wrote:
> On Thu, Sep 4, 2014 at 9:17 PM, Denis McMahon
> wrote:
>> On Wed, 03 Sep 2014 07:16:34 +, Steven D'Aprano wrote:
>>
>>> Who uses + for disjunction (∨ OR) and concatenation for conjunction (∧
>>> AND)? That's crazy notation.
>>
>> The
On Thu, Sep 4, 2014 at 9:17 PM, Denis McMahon wrote:
> On Wed, 03 Sep 2014 07:16:34 +, Steven D'Aprano wrote:
>
>> Who uses + for disjunction (∨ OR) and concatenation for conjunction (∧
>> AND)? That's crazy notation.
>
> The way I was taught it in the mid 1980s, a.b === a and b, a+b === a or
On Wed, 03 Sep 2014 07:16:34 +, Steven D'Aprano wrote:
> Who uses + for disjunction (∨ OR) and concatenation for conjunction (∧
> AND)? That's crazy notation.
The way I was taught it in the mid 1980s, a.b === a and b, a+b === a or b.
--
Denis McMahon, denismfmcma...@gmail.com
--
https://ma
Steven D'Aprano :
> Marko Rauhamaa wrote:
>> That's the classic Boolean algebraic notation.
>
> Says who? (Apart from you, obviously :-) Since when? I've never seen
> it in *any* discussion of Boolean algebra.
I have only run into George Boole, Boolean algebra and booleans in
engineering textboo
On Thursday, September 4, 2014 7:24:19 AM UTC+5:30, Steven D'Aprano wrote:
> Marko Rauhamaa wrote:
> > Steven D'Aprano:
> >> Who uses + for disjunction (∨ OR) and concatenation for conjunction (∧
> >> AND)? That's crazy notation.
> > That's the classic Boolean algebraic notation.
> Says who? (Ap
On Thu, Sep 4, 2014 at 11:54 AM, Steven D'Aprano
wrote:
> although the
> analogy is terrible for ∨. 1+1 = 2, not 1.
I wouldn't say terrible. Unclear perhaps, but functional. Try this exercise:
false, true = 0, 1 # or use an old Python
if true + true:
print("true OR true is true")
As long as
Marko Rauhamaa wrote:
> Steven D'Aprano :
>
>> Who uses + for disjunction (∨ OR) and concatenation for conjunction (∧
>> AND)? That's crazy notation.
>
> That's the classic Boolean algebraic notation.
Says who? (Apart from you, obviously :-) Since when? I've never seen it in
*any* discussion o
Steven D'Aprano :
> Who uses + for disjunction (∨ OR) and concatenation for conjunction (∧
> AND)? That's crazy notation.
That's the classic Boolean algebraic notation. In basic algebra, the two
interesting operations are "addition" and "multiplication". Boolean math
works like elementary arithme
On Tue, 02 Sep 2014 20:14:51 -0700, Rustom Mody wrote:
> Dijkstra
> used to point out
>
> A ∧ (B ∨ C) ≡ (A ∧ B) ∨ (A ∧ C) A ∨ (B ∧ C) ≡ (A ∨ B) ∧ (A ∨ C) look
> normal enough in this form
>
> Put then into the way engineers do it and they become A(B + C) = AB + AC
> A + BC = (A+B)(A+C)
o_O
Who
On Wednesday, September 3, 2014 7:14:14 AM UTC+5:30, Steven D'Aprano wrote:
> Grant Edwards wrote:
> > I missed the beginning of the thread, but Why are you comparing things
> > to True and False?
> I don't understand why people do it, but it's *incredibly* common. A couple
> of weeks ago at work
Grant Edwards wrote:
> I missed the beginning of the thread, but Why are you comparing things
> to True and False?
I don't understand why people do it, but it's *incredibly* common. A couple
of weeks ago at work, I had to (gently, in a friendly manner) mock one of
our most senior and accomplished
On Tue, 2 Sep 2014 16:43:09 + (UTC), Grant Edwards
wrote:
>On 2014-08-30, Tim Chase wrote:
>> On 2014-08-30 14:27, Seymore4Head wrote:
>>> I really tried to get this without asking for help.
>>>
>>> mylist = ["The", "earth", "Revolves", "around", "Sun"]
>>> print (mylist)
>>> for e in mylis
On 2014-08-30, Tim Chase wrote:
> On 2014-08-30 14:27, Seymore4Head wrote:
>> I really tried to get this without asking for help.
>>
>> mylist = ["The", "earth", "Revolves", "around", "Sun"]
>> print (mylist)
>> for e in mylist:
>>
>> # one of these two choices should print something. Since ne
On Sun, Aug 31, 2014 at 6:37 PM, Steven D'Aprano
wrote:
> - Use print() to see the intermediate results:
>
> a = e[0].isupper
> print(e[0], a, a == False, a == True)
And I'll add to this: *Copy and paste* the original code to craft this
output statement. I recently was trying to figure ou
Seymore4Head wrote:
> That would work now, but I didn't even know no.isupper() was command
> until 15 min ago. :)
>
> I have been told that one is a method and the other calls a method. I
> still have to learn exactly what that means. I'm getting there.
Indeed you are :-)
"Command", in Pytho
For future reference, here is a hint as to how to debug problems like this,
and a cleaner way to write the code.
Seymore4Head wrote:
> On Sat, 30 Aug 2014 13:48:09 -0500, Tim Chase
> wrote:
>>> if e[0].isupper == False:
>>> print ("False")
>>> if e[0].isupper == True:
>>>
On 30Aug2014 17:48, Seymore4Head wrote:
I have been told that one is a method and the other calls a method. I
still have to learn exactly what that means. I'm getting there.
A method is, essentially, a function. Observe:
def my_func(x):
print(9)
my_func is just the name of the functi
On 30/08/2014 22:48, Seymore4Head wrote:
On Sat, 30 Aug 2014 22:21:40 +0100, Mark Lawrence
wrote:
On 30/08/2014 19:48, Tim Chase wrote:
On 2014-08-30 14:27, Seymore4Head wrote:
I really tried to get this without asking for help.
mylist = ["The", "earth", "Revolves", "around", "Sun"]
print (
On Sat, 30 Aug 2014 22:21:40 +0100, Mark Lawrence
wrote:
>On 30/08/2014 19:48, Tim Chase wrote:
>> On 2014-08-30 14:27, Seymore4Head wrote:
>>> I really tried to get this without asking for help.
>>>
>>> mylist = ["The", "earth", "Revolves", "around", "Sun"]
>>> print (mylist)
>>> for e in mylist
On 30/08/2014 19:48, Tim Chase wrote:
On 2014-08-30 14:27, Seymore4Head wrote:
I really tried to get this without asking for help.
mylist = ["The", "earth", "Revolves", "around", "Sun"]
print (mylist)
for e in mylist:
# one of these two choices should print something. Since neither
does, I
On Sat, 30 Aug 2014 16:20:56 -0400, Ned Batchelder
wrote:
>On 8/30/14 2:50 PM, Seymore4Head wrote:
>> On Sat, 30 Aug 2014 13:48:09 -0500, Tim Chase
>> wrote:
>>
>>> On 2014-08-30 14:27, Seymore4Head wrote:
I really tried to get this without asking for help.
mylist = ["The", "earth
On 8/30/14 2:50 PM, Seymore4Head wrote:
On Sat, 30 Aug 2014 13:48:09 -0500, Tim Chase
wrote:
On 2014-08-30 14:27, Seymore4Head wrote:
I really tried to get this without asking for help.
mylist = ["The", "earth", "Revolves", "around", "Sun"]
print (mylist)
for e in mylist:
# one of these t
On Sat, 30 Aug 2014 13:48:09 -0500, Tim Chase
wrote:
>On 2014-08-30 14:27, Seymore4Head wrote:
>> I really tried to get this without asking for help.
>>
>> mylist = ["The", "earth", "Revolves", "around", "Sun"]
>> print (mylist)
>> for e in mylist:
>>
>> # one of these two choices should print
On 2014-08-30 14:27, Seymore4Head wrote:
> I really tried to get this without asking for help.
>
> mylist = ["The", "earth", "Revolves", "around", "Sun"]
> print (mylist)
> for e in mylist:
>
> # one of these two choices should print something. Since neither
> does, I am missing something subtl
I really tried to get this without asking for help.
mylist = ["The", "earth", "Revolves", "around", "Sun"]
print (mylist)
for e in mylist:
# one of these two choices should print something. Since neither
does, I am missing something subtle.
if e[0].isupper == False:
print ("False
28 matches
Mail list logo
