ttp://xkcd.com/353/
Enjoy
NevilleDNZ
--
To download Linux's Algol68 Compiler, Interpreter & Runtime:
* http://sourceforge.net/projects/algol68/files
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On Oct 9, 6:55 pm, Lawrence D'Oliveiro wrote:
> In message , BartC wrote:
>
> > "NevilleDNZ" wrote in message
> >news:ad9841df-49a1-4c1b-95d0-e76b72df6...@w9g2000prc.googlegroups.com...
>
> >> In Algol68 this would be:
> >> x:=(i|"One&
ef" form if IF clause: ( condition1 | statements |: condition2 |
statements | statements )
CASE switch1 IN statements, statements,... OUSE switch2 IN
statements, statements,... [ OUT statements ] ESAC
"brief" form of CASE statement: ( switch1 |
statements,statements,... |: switch
On Oct 7, 9:23 am, Lawrence D'Oliveiro wrote:
> x = {1 : "One", 2 : "Two", 3 : "Three"}.get(i, "None Of The Above")
More like:
x = {1:lambda:"One", 2:lambda:"Two", 3:lambda:"Three"}.get(i,
lambda:"None Of The Above")()
i.e. deferred evaluation of selected case.
In Algol68 this would be:
x:=(i|"
u to join one of the below groups (my .sig below) and
deposit some of your Algol68 impressions
There is also a chrestomathy site http://rosettacode.org/wiki/ALGOL_68
where you can pick out an code sample unimplemented in Algol68 and
torture test your Algol68 memories. (Be warned: Most of the eas
On Sep 3, 2:57 pm, James Harris wrote:
> On 3 Sep, 14:26, Albert van der Horst
> wrote:
>
> > In article
> > <6031ba08-08c8-416b-91db-ce8ff57ae...@w6g2000yqw.googlegroups.com>,
> > James Harris wrote:
> >
>
> > >So you are saying that Smalltalk has r where
> > >r is presumably for radix? That
On Aug 23, 9:42 pm, James Harris
wrote:
> The numbers above would be
>
> 0b1011, 0t7621, 0xc26b
Algol68 has the type BITS, that is converted to INT with the ABS
operator.
The numbers above would be:
> 2r1011, 8r7621, 16rc26b
"r" is for radix: http://en.wikipedia.org/wiki/Radix
The standard
To check a complete python expression use:
def check_open_close(expr):
try:
eval(expr)
except SyntaxError:
return False
else:
return True
This also ignores brackets in quotes, and checks <= & >= operators are
syntatically correct etc...
But is may have side effects... ;-)
eg.
c
On May 2, 11:13 am, George Sakkis <[EMAIL PROTECTED]> wrote:
> [1]http://en.wikipedia.org/wiki/Context-free_language
> [2]http://en.wikipedia.org/wiki/Regular_language
> [3]http://wiki.python.org/moin/LanguageParsing
Thanx for the link to these parsers. ANTLR looks interesting.
Yoyo: http://www-us
Below is a (flawed) one line RegEx that checks curly brackets (from
awk/c/python input) are being matched. Is there a one liner for doing
this in python?
ThanX
N
re_open_close="(((\{))[^{}]*((?(0)\})))+"
re_open_close=re.compile(re_open_close)
tests="""
{ this is a test BAD
{ this is a test
)"
$ ./uc.py
English/ASCII quoting: "ĦəίιÒ ώσŔĹĐ" SUCCEEDS :-)
German/ALCOR quoting: ᛭test᛭ AOK :-)
German/ALCOR quoting: ᛭ĦəίιÒ ώσŔĹĐ᛭ Just TOO easy :-)
NevilleDNZ wrote:
> Hi,
>
> Apologies first as I am not a unicode expert indeed I the details
> probably totally e
ror: 'ascii' codec can't decode byte 0xc4 in position 0:
ordinal not in range(128)
The last print statement fails because the ascii "imported" characters
are 8 bit encoded UTF-8 and dont know it! How do I tell "imported" that
it is actually already UTF-8 unicode?
Cheers
NevilleDNZ
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http://mail.python.org/mailman/listinfo/python-list
Steven D'Aprano wrote:
> Basically, when you access a variable name on the left hand side of an
> assignment (e.g. "a = 1") ANYWHERE in a function, that name is local to
> that function UNLESS it has been declared global.
ThanX Steven, I am still getting used to python scoping rules. I didn't
real
Steve Holden wrote:
> No. It's too horrible to contemplate without getting mild feelings of
> nausea. What exactly is it you are tring to achieve here (since I assume
> your goal wasn't to make me feel sick :-)?
It is part of an algorithum:
#!/usr/bin/env python
def A(k, x1, x2, x3, x4, x5):
de
I inserted x1,x2 into A to force a wider scope and it works.
#!/usr/bin/env python
def A():
print "begin A:"
A.x1=123;
A.x2=456;
def B():
print "begin B:",A.x1,A.x2
A.x2 = A.x2 + 210; # problem gone.
print "end B:",A.x1,A.x2
print "pre B:",A.x1,A.x2
B()
print "end A:",A.x
Steve Holden wrote:
> Hardly surprising. This statement is an assignment to x2, which
> therefore becomes local to the function. Since no previous value has
> been assigned to this local, the exception occurs.
But: In this case the assignment is never reached eg..
#!/usr/bin/env python
def A(
Can anyone explain why "begin B: 123" prints, but 456 doesn't?
$ /usr/bin/python2.3 x1x2.py
begin A:
Pre B: 123 456
begin B: 123
Traceback (most recent call last):
File "x1x2.py", line 13, in ?
A()
File "x1x2.py", line 11, in A
B()
File "x1x2.py", line 7, in B
print "begin B:",x
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