[alg.random.sample] Remove redundant requirement #2798
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Per [rand.req.urng]/1, the result type of a `UniformRandomBitGenerator` must model `UnsignedIntegral`, i.e., it must be an integral type. [alg.random.sample]/1.5 requires `Distance` to be an integer type. Since all integer types are convertible to all other integer types, the result type of any `UniformRandomBitGenerator` is convertible to `Distance`. The library need not enforce the rules of the core language.
jwakely
approved these changes
Jun 11, 2019
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Per [rand.req.urng]/1, the result type of a
UniformRandomBitGeneratormust modelUnsignedIntegral, i.e., it must be an integral type. [alg.random.sample]/1.5 requiresDistanceto be an integer type. Since all integer types are convertible to all other integer types, the result type of anyUniformRandomBitGeneratoris convertible toDistance. The library need not enforce the rules of the core language.