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License: MIT License
Convert between Go types, including bool, string, numbers, time, map, struct, slice.
License: MIT License
Currently, the time-zone of output time.Time is always time.Local. It's not compatible to the standard lib.
In the standard lib:
// When converting a timestamp (a number) to a time.Time, the standard lib use time.Local as the location.
time.Unix(0) // Returns with time.Local.
// When converting a string to a time.Time, the location is read from the given value.
time.Parse(time.RFC3339, "2022-04-20T11:30:40+12:00") // Returns a Time with offset 12:00.
time.Parse(time.RFC3339, "2022-04-20T11:30:40Z") // Returns a Timewith time.UTC.
Consider:
// Returns a Time with time.Local, behaves like time.Unix().
conv.ConvertType(123, reflect.TypeOf(time.Time{}))
// Returns a Time with offset 12:00, like time.Parse().
conv.ConvertType("2022-04-20T11:30:40+12:00", reflect.TypeOf(time.Time{}))
// Returns a Time with time.UTC, like time.Parse().
conv.ConvertType("2022-04-20T11:30:40+12:00", reflect.TypeOf(time.Time{}))
// When converting a Time to a Time, keeps the location.
conv.ConvertType(time.Now(), reflect.TypeOf(time.Time{})) // Returns Local.
conv.ConvertType(time.Now().UTC(), reflect.TypeOf(time.Time{})) // Returns UTC.
This code panics:
type V int
var v V
_ = conv.Convert(3, &v)
with the message: "reflect.Set: value of type int is not assignable to type conv_test.V".
And this code returns an int instead of V:
type V int
out, _ := conv.ConvertType(1, reflect.TypeOf(V(0)))
fmt.Println(reflect.ValueOf(out).Type()) // -> int
The basetype is not properly processed.
Currently embedded structs are not supported.
type Embedded struct {
B int
}
type Demo struct {
A int
Embedded
}
m := map[string]interface{}{
"A": 1,
"B": 2,
}
var demo Demo
conv.Convert(m, &demo) // -> demo.B == 0 , it should be 2.
The code outputs an error: "conv.Convert: when converting a map to a struct, the map must be map[string]interface{}, got map[string]int".
type S struct {
A, B int
}
var n S
err := conv.Convert(map[string]int{"A": 1, "B": 2}, &n)
fmt.Println(err)
Consider support converting a map other than map[string]interface{}
to a struct.
time.Duration can be converted from/to integers.
We got an error "cannot convert int to interface {}" from the code below:
var aa any
err := conv.Convert(1, &aa)
fmt.Println(err)
Consider support converting a value to any
(the empty interface), just returns the cloned value like:
conv.ConvertType(value, reflect.TypeOf(value))
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