On Thursday, September 29, 2016 at 12:32:48 PM UTC+8, Henrik Johansson
wrote:
>
> This is just how type assertion works.
> If you don't use the dual return it panics if the actual type is different
> from the one you try to assert.
>
but what is the underlining reason for the inconsistency between map index
and type assert?
>
> On Thu, Sep 29, 2016, 05:26 T L <tapi...@gmail.com <javascript:>> wrote:
>
>> package main
>>
>> func main() {
>> var m = map[string]int{}
>> _, _ = m["abc"] // ok
>> _ = m["abc"] // ok
>>
>> var i interface{} = 789
>> _, _ = i.(bool) // ok
>> _ = i.(bool) // panic: interface conversion: interface is int, not
>> bool
>> }
>>
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