r - "Unexpected Special in %:%"%do% foreach，语法正确，foreach包已经加载

Question

foreach(i = 1:nrow(teamAttributes))
%:% foreach(j = 1:nrow(allTeams))
%do% if (teamAttributes$team_api_id[i] == allTeams$home_team_api_id[j]) {
subjectTeamAttributes <- rbind(teamAttributes[i, ], subjectTeamAttributes)
}

##错误信息

Error: unexpected SPECIAL in "%:%"
Error: unexpected SPECIAL in "%do%"
subjectTeamAttributes <- rbind(teamAttributes[i, ], subjectTeamAttributes)
Error in `[.data.frame`(teamAttributes, i, ) : object 'i' not found

Answer 1

上面由 Dason 回答。格式是问题所在。将所有内容放在一条线上解决了这个问题。