[go-nuts] How to be simple the code without select expression " x= A ? B: C "

[Wang Sheng]

I am new for golang, I think following code is too redundant , is there any 
way simplify it ?        

                                 name, ok := fieldsMap["name"]
                                        if !ok {
                                                name = ""
                                        }

                                        topic, ok := fieldsMap["topic"]
                                        if !ok {
                                                topic = ""
                                        }

                                        desc, ok := fieldsMap["desc"]
                                        if !ok {
                                                topic = ""
                                        }

                                        if result, err := db.Exec("INSERT 
INTO rooms VALUES('%s' , '%s', '%s', '%s', '%d', %t, %t, '%s')",
                                                roomjid,
                                                name,
                                                desc,
                                                topic,
                                                false,
                                                fieldsMap["secret"]); err 
!= nil {

                                                panic(" insert new room 
into database failed")
                                        }

                                        Rooms[roomjid].locking = false

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