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Newsgroups: comp.lang.python
Date: Tue, 22 Jan 2013 09:02:58 -0800 (PST)
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Subject: Re: Converting a string to a number by using INT  (no hash method)
From: Ferrous Cranus <nikos.gr33k@gmail.com>
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Xref: csiph.com comp.lang.python:37308

=CE=A4=CE=B7 =CE=A4=CF=81=CE=AF=CF=84=CE=B7, 22 =CE=99=CE=B1=CE=BD=CE=BF=CF=
=85=CE=B1=CF=81=CE=AF=CE=BF=CF=85 2013 6:27:32 =CE=BC.=CE=BC. UTC+2, =CE=BF=
 =CF=87=CF=81=CE=AE=CF=83=CF=84=CE=B7=CF=82 Leonard, Arah =CE=AD=CE=B3=CF=
=81=CE=B1=CF=88=CE=B5:
> > I just need a way to CONVERT a string(absolute path) to a 4-digit uniqu=
e number with INT!!! That's all i want!! But i cannot make it work :(
>=20
> >=20
>=20
> > And the best part is that "that" number must be able to turn back into =
a path.
>=20
> >=20
>=20
> > This way i DON'T EVEN HAVE TO STORE THE ACTUAL HTML PAGE'S ABSOLUTE PAT=
H!!!!
>=20
> >=20
>=20
> > 1. User requests a specific html page( .htaccess gives my script the ab=
solute path for that .html page) 2. I turn the path into a 4-digitnumber 3.=
 i store that number to the database. I DONT EVEN HAVE TO STORE THE PATH TO=
 THE DATABASE ANYMORE!!! this is just great!
>=20
>=20
>=20
> Without involving some kind of lookup table/map service to store the path=
s (which would entirely >defeat the purpose) what you are ranting about is =
technically impossible.  If you tried really >really hard you *might* be ab=
le to convert a string that long into some kind of 4-digit integer >checksu=
m, but you would *never* be able to convert that back into a file path.  No=
r would it be >guaranteed to be unique.

Now that iam thinking of it more and more, i don't have to turn the 'path' =
back to a 'number'

So, what i want is a function foo() that does this:

foo( "some long string" )  -->  1234

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
1. User requests a specific html page( .htaccess gives my script the absolu=
te path for that .html page)=20
2. turn the 'path' to 4-digit number and save it as 'pin'  (how?)
3. i store that number to the database. I DONT EVEN HAVE TO STORE THE HTML =
PAGE'S PATH TO THE DATABASE ANYMORE!!! this is just great!=20


At some later time i want to check the weblog of that .html page


1. request the page as:  http://mydomain.gr/index.html?show=3Dlog
2. .htaccess gives my script the absolute path of the requested .html file
3. turn the 'path' to 4-digit number and save it as 'pin' (this is what i'a=
m asking)
4. select all log records for that specific .html page  (based on the 'pin'=
 column)


Since i have the requested 'path' which has been converted to a database st=
ored 4-digit number, i'am aware for which page i'am requesting detailed dat=
a from, so i look upon the 'pin' column in the database and thus i know whi=
ch records i want to select.

No need, to turn the number back to a path anymore, just the path to a numb=
er, to identify the specific .html page

Can this be done?