在Golang中填充对象

Question

How can I fill the todos-Object with a for-loop?

type Row struct {
    Name      string
    Completed bool
    Due       time.Time
    Rcount    string
}
type Rows []Row
todos := Rows{
        Row{Name: "Write presentation"},
        Row{Name: "Host meetup"},
}

Answer 1

I think you are looking for the builtin function append

Note that it is normally used in combination with an assignment, because it may have to allocate additional memory. A zero value slice works just fine, no need to call make.

steps := []string{"write program", "???", "profit"}

var rows []Row
for _, tasks := range steps {
  rows = append(rows, Row{Name: tasks})
}

If you want to loop over a sqlite3 query result, your loop will look different, but the x = append(x, ...) pattern will stay the same

If you know in advance how big your slice is going to be, explicit initialization with make will be more efficient.

var rows = make([]Row, len(steps))
for i, tasks := range steps {
    rows[i] = Row{Name: tasks}
}