minimize 0.5*sum(i in t效)((pti-pli)+sum(J in number)pevchi*ci+sum(j in number)-pevdisi*ci);但以{35:ct1:forall(i in t效) {if(pli<7000000) ci==2.5;ct2:if(7000000<=pli<=10000000) ci==3.5;ct5 3:if(pli>10000000) ci==5;} ct5 4:forall(i in t效,j
谁能告诉我Laravel 5等效查询(eloquent或query builder )用于以下查询--
select * from questions where id NOT in ( selectquestion_id from answers where student_id=5 ) AND exam_id=4
那么,开发人员如何在ECMAScript的旧版本(如ES5 )中创建此ES5。Upcoming edition of ECMAScript is ES" + c);}ES5中的等效代码是什么Upcoming edition of ECMAScript is ES" + i);}
es[6](); // Upcoming edition of