ReaderParameter.pair_prepare_join: def of bendvy-ecs-core@0.1.0.4
Import: import bendvy-ecs-core@0.1.0.4/reader_parameter.bend as ReaderParameter
Lines 82-84 of bendvy-ecs-core@0.1.0.4/reader_parameter.bend: https://jend.leeeet.dev/read.txt?path=bendvy-ecs-core@0.1.0.4/reader_parameter.bend&start_line=82&end_line=84

import Base

def pair_prepare_join(~W:Type,~OwnerA:Type,~OwnerB:Type,~ViewA:Data,~ViewB:Data,~DeltaA:Type,~DeltaB:Type,ownerA:OwnerA,viewA:ViewA,deltaA:DeltaA,preparedB:W & (OwnerB & (ViewB & DeltaB))) -> W & ((OwnerA & OwnerB) & (ViewPair<ViewA,ViewB> & (DeltaA & DeltaB))):
  match preparedB:
    case (world,(ownerB,(viewB,deltaB))):(world,((ownerA,ownerB),(ViewPair{viewA,viewB},(deltaA,deltaB))))

Uses (3):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Pair
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=Sigma
  https://jend.leeeet.dev/definition.txt?path=bendvy-ecs-core@0.1.0.4/reader_parameter.bend&name=ViewPair