import java.util.*;
class OperatorPrecedenceExp
{
public static void main(String[] args)
{
int e=10;
sum=++e+e--;//e-- should b evaluated first
System.out.p
此代码不编译: let f (x:byte) = printfn "%d" x
let b = int 'a'
f(byte <| b ||| 0x1)
(4,17): error FS0001: This expression was expected to have type
byte
but here has type
int
http://ideone.
我不熟悉OCaml,但已参与分析一些OCaml代码。 这段代码令我困惑。基于运算符优先级,正确的分组是什么? let new_fmt() =
let b = new_buf() in
let fmt = Format.formatter_of_buffer b in
(fmt,
fun() ->
Format.pp_print_flush fmt(
用雄辩我有以下查询写着: Contact::select(DB::raw("DATE_FORMAT(DATE(`created_at`),'%b %d') as date"))
->addSelect(DB::raw("`created_at`"))
->addSelect(DB::raw("COUNT(*) as `count`"))