[petsc-dev] broken TS example related to Jacobian and coloring etc.

[Jed Brown]

On Tue, Aug 14, 2012 at 3:35 PM, Matthew Knepley <knepley at gmail.com> wrote:

> I guess I do not understand. What is the context set API? Why can't you
> pass NULL?


You can, but the setter routines interpret NULL as "ignore", i.e.

if (func) ctx->func = func;
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