Function plus

ar.py:90–97

(e1: dict[str, float], e2: dict[str, float])

def plus(e1: dict[str, float], e2: dict[str, float]) -> dict[str, float]:
  e = dict(e1)
  for v, c in e2.items():
    if v in e:
      e[v] += c
    else:
      e[v] = c
  return strip(e)


def plus_all(*es: list[dict[str, float]]) -> dict[str, float]: