mirai
2.10.0
common
mirai-core-api
/
net.mamoe.mirai.event
/
MessageSelectBuilder
/
mapping
mapping
common
open
override
fun
<
N
:
Any
>
mapping
(
mapper
:
M
.
(
String
)
->
N
?
,
onEvent
:
suspend
M
.
(
N
)
->
R
)
:
Nothing
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如果
mapper
返回值非空, 就执行
onEvent