Default dictionary in MixedIntegerLinearProgram

[nathanncohen]

Martin Albrecht requested this functionality for his code, and it would also simplify mine. For short linear programs, of when some global variables do not require the creation of a new dictionary of variables ( from which only one field would be used ), this trick is good enough !

Nathann

CC: @malb

Component: numerical

Author: Nathann Cohen

Reviewer: Martin Albrecht

Merged: sage-4.3.rc1

Issue created by migration from https://trac.sagemath.org/ticket/7637

[malb]

comment:1

• try: foo except AttributeError: seems to be favoured in the Python community over hasattr. It is also faster if the attribute does in fact exist.
  • Why do you call __getitem__() instead of using the normal syntax [x]?

[nathanncohen]

comment:2

Done !

[malb]

comment:3

Attachment: trac_7637.patch.gz

[mwhansen]

Author: Nathann Cohen

[mwhansen]

Reviewer: Martin Albrecht

[mwhansen]

Merged: sage-4.3.rc1