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- from sympy.core.symbol import Symbol
- from sympy.codegen.ast import Type
- from sympy.codegen.cxxnodes import using
- from sympy.printing.codeprinter import cxxcode
- x = Symbol('x')
- def test_using():
- v = Type('std::vector')
- u1 = using(v)
- assert cxxcode(u1) == 'using std::vector'
- u2 = using(v, 'vec')
- assert cxxcode(u2) == 'using vec = std::vector'
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