Re: multiplication of lists of strings
On Mar 5, 2:16 am, Bruno Desthuilliers bruno. [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] a écrit : (snip) That reminds me: Is there a generic 'relation' pattern/recipie, such as finding a computer that's paired with multiple users, each of who are paired with multiple computers, without maintaining dual- associativity? Yes : use a relational database. No performance hit. Can I write an ad hoc relational class structure? -- http://mail.python.org/mailman/listinfo/python-list
Re: multiplication of lists of strings
On Mar 8, 12:04 pm, [EMAIL PROTECTED] wrote: On Mar 5, 2:16 am, Bruno Desthuilliers bruno. [EMAIL PROTECTED] wrote: [EMAIL PROTECTED] a écrit : (snip) That reminds me: Is there a generic 'relation' pattern/recipie, such as finding a computer that's paired with multiple users, each of who are paired with multiple computers, without maintaining dual- associativity? Yes : use a relational database. No performance hit. Can I write an ad hoc relational class structure? What do you think of this solution? http://jtauber.com/blog/2005/11/10/relational_python:_basic_class_for_relations/ http://www.google.com/search?hl=enq=python+relational+class+-database -- http://mail.python.org/mailman/listinfo/python-list
Re: multiplication of lists of strings
[EMAIL PROTECTED] a écrit : (snip) That reminds me: Is there a generic 'relation' pattern/recipie, such as finding a computer that's paired with multiple users, each of who are paired with multiple computers, without maintaining dual- associativity? Yes : use a relational database. -- http://mail.python.org/mailman/listinfo/python-list
Re: multiplication of lists of strings
En Tue, 04 Mar 2008 23:50:49 -0200, Jason [EMAIL PROTECTED] escribió: How could I return a list or tuple of each unique combination of a given set of lists (perhaps from a dict or a list). This means the number of lists are not known nor is the length of each. Use the Google interfase for this group: http://groups.google.com/group/comp.lang.python/ Type unique combinations lists in the text box; press Search in this group. The very first result contains some answers to your question. -- Gabriel Genellina -- http://mail.python.org/mailman/listinfo/python-list
Re: multiplication of lists of strings
Gabriel Genellina wrote: En Tue, 04 Mar 2008 23:50:49 -0200, Jason [EMAIL PROTECTED] escribió: How could I return a list or tuple of each unique combination of a given set of lists (perhaps from a dict or a list). This means the number of lists are not known nor is the length of each. Use the Google interfase for this group: http://groups.google.com/group/comp.lang.python/ Type unique combinations lists in the text box; press Search in this group. The very first result contains some answers to your question. found it, the referenced cookbook recipe is perfect. Thanks, Gabriel -- http://mail.python.org/mailman/listinfo/python-list
Re: multiplication of lists of strings
On Mar 4, 9:46 pm, Jason Galyon [EMAIL PROTECTED] wrote: Gabriel Genellina wrote: En Tue, 04 Mar 2008 23:50:49 -0200, Jason [EMAIL PROTECTED] escribió: How could I return a list or tuple of each unique combination of a given set of lists (perhaps from a dict or a list). This means the number of lists are not known nor is the length of each. Use the Google interfase for this group: http://groups.google.com/group/comp.lang.python/ Type unique combinations lists in the text box; press Search in this group. The very first result contains some answers to your question. found it, the referenced cookbook recipe is perfect. Thanks, Gabriel That reminds me: Is there a generic 'relation' pattern/recipie, such as finding a computer that's paired with multiple users, each of who are paired with multiple computers, without maintaining dual- associativity? Good: py user.getcomputers() [ Compie1, Compie2 ] Bad: user._computers.add( compieN ) compieN._users.add( user ) ? -- http://mail.python.org/mailman/listinfo/python-list
