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Regular expressions are a universal tool for matching, validating, and transforming text across programming languages and command-line tools. They can condense complex string operations into compact, ...

// This file contains a simple Stokes solver for a parabolic Poiseuille-Flow on the // unit-square domain. // The PDE to be solved reads: // -Laplace(v) + Gradient(P) = 0 in the domain [0,1]x[0,1] // ...