Modern C++ could use lambdas: auto a = [] {frob(-1,0,0); grob("a"); blah(...);}; auto b = [] {frob(1,0,0); grob("b"); blah(...);}; auto c = [] {fro

Modern C++ could use lambdas: auto a = [] {frob(-1,0,0); grob("a"); blah(...);}; auto b = [] {frob(1,0,0); grob("b"); blah(...);}; auto c = [] {frob(0,-1,0); grob("c"); blah(...);}; ... if (normal_order) { a(); b(); c(); ... } else if (...) { b(); c(); a(); ... } ...