Function IsAlpha

tensorflow/core/util/device_name_utils.cc:25–27

namespace tensorflow {

static bool IsAlpha(char c) {
  return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
}

static bool IsAlphaNum(char c) { return IsAlpha(c) || (c >= '0' && c <= '9'); }