我不熟悉OCaml,但已參與分析一些OCaml代碼。 這段代碼令我困惑。基於運算符優先級,正確的分組是什麼? let new_fmt() =
let b = new_buf() in
let fmt = Format.formatter_of_buffer b in
(fmt,
fun() ->
Format.pp_print_flush fmt(
用雄辯我有以下查詢寫着: Contact::select(DB::raw("DATE_FORMAT(DATE(`created_at`),'%b %d') as date"))
->addSelect(DB::raw("`created_at`"))
->addSelect(DB::raw("COUNT(*) as `count`"))
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
此代碼不編譯: 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.