在大多数新的-年的挑战时，它是目前还没有挑战的一年相对应，它说，这在前面。

各位，已经是[本年]，回家。

您必须输出此文本并替换当前年份。

输入输出

输入：无。

输出：It's [year] already, folks, go home.将[year]更改为当前年份。

bash +日期，40个字节

date +"It's %Y already, folks, go home."

在线尝试！

C（gcc），58个字节

f(){printf("It's%s already, folks, go home.",__DATE__+6);}

05AB1E，21 20字节

感谢Outgolfer的Erik节省了一个字节

žg“It's ÿˆ§,¹Ò,‚œ€¨.

在线尝试！

TeX（44字节）

It's \the\year\ already, folks, go home.\bye

PHP，42字节

It's <?=date(Y)?> already, folks, go home.

重击，45个字符

printf "It's %(%Y)T already, folks, go home."

Bash printf在4.2版中内置了%(fmt)T格式说明符，从4.3版开始，它在没有参数的情况下默认为当前时间戳。

样品运行：

bash-4.3$ printf "It's %(%Y)T already, folks, go home."
It's 2017 already, folks, go home.

批量45字节

@echo It's %date:~6% already, folks, go home.

批次实际上具有合理的竞争力。

Mathematica，53个字节

Print["It's ",Now[[1,1]]," already, folks, go home."]

DOS上的x86机器代码-62个字节

00000000  b4 04 cd 1a bf 23 01 88  c8 24 0f 00 05 4f c1 e9  |.....#...$...O..|
00000010  04 75 f4 ba 1b 01 b4 09  cd 21 c3 49 74 27 73 20  |.u.......!.It's |
00000020  30 30 30 30 20 61 6c 72  65 61 64 79 2c 20 66 6f  |0000 already, fo|
00000030  6c 6b 73 2c 20 67 6f 20  68 6f 6d 65 2e 24        |lks, go home.$|
0000003e

即使来自BIOS的输入是BCD（与从等效的DOS调用获得的普通16位值相反），将其解码为ASCII的时间几乎与以10为基数打印寄存器的时间一样长。那好吧。

    org 100h

section .text

start:
    mov ah,4
    int 1ah             ; get the date from BIOS; cx now contains the year in packed BCD
    mov di,placeholder  ; put di on the last character of placeholder
lop:
    mov al,cl
    and al,0xf  ; get the low nibble of cx
    add [di],al ; add it to the digit
    dec di      ; previous character
    shr cx,4    ; next nibble
    jnz lop     ; loop as long as we have digits to unpack in cx
    mov dx,its
    mov ah,9
    int 21h     ; print the whole string
    ret

its:
    db "It's 000"
placeholder:
    db "0 already, folks, go home.$"

Ruby, 52 bytes

puts"It's #{Time.now.year} already, folks, go home."

Python 2, 67 bytes

import time
print"It's",time.gmtime()[0],"already, folks, go home."

Try it online!

CJam, 38 bytes

"It's "et0=" already, folks, go home."

Try it online!

Mathematica, 58 bytes

"It's "<>ToString@#<>" already, folks, go home."&@@Date[]&

Anonymous function. Takes no input and returns a string as output. No, I'm not going to make a REPL submission, post it yourself if that one byte is so important.

Perl 6,  53  51 bytes

say "It's {Date.today.year} already, folks, go home."

Try it

say "It's {now.Date.year} already, folks, go home."

Try it

TI-Basic (TI-84 Plus CE with OS 5.2+), 64 bytes

getDate
"It's "+toString(Ans(1))+" already, folks, go home.

TI-Basic is a tokenized language. Some commands (getDate, toString(, etc.), and all lowercase letters are two-bytes and everything else used here is one byte each.

Explanation:

getDate                                             # 3, store {Y,M,D} in Ans
"It's "+toString(Ans(1))+" already, folks, go home. # 61, implicitly return required string with Y from getDate

TI-Basic (TI-84 Plus CE with OS 5.1), 108 bytes

{0,1→L1
getDate
Ans(1)L1→L2
LinReg(ax+b) Y1
Equ►String(Y1,Str0
sub(Str0,1,length(Str0)-3→Str0
"It's "+Str0+" already, folks, go home.

TI-Basic is a tokenized language. The more complicated user variables (Y1, L1, L2, Str0), some commands (LinReg(ax+b , getDate, sub(, Equ►String(, length(), and all lowercase letters are two-bytes and everything else used here is one byte each.

OS 5.2 added a toString( command, which obsolesces about half of this submission, which is based off of this algorithm.

Explanation:

{0,1→L1                                  # 8 bytes
getDate                                  # 3 bytes, store {Y,M,D} list in Ans
Ans(1)L1→L2                              # 10 bytes, multiply L1 by the year and store in L2
LinReg(ax+b) Y1                          # 5 bytes, take a linear regression of the points specified by each pair of corresponding coordinates in L1 and L2 and store it in Y1
Equ►String(Y1,Str0                       # 8 bytes, convert Y1 to a string
sub(Str0,1,length(Str0)-3→Str0           # 18 bytes, remove the "X+0" from LinReg
"It's "+Str0+" already, folks, go home.  # 56 bytes, implicitly return the required output

JavaScript ES6, 56 bytes

_=>`It's ${Date().split` `[3]} already, folks, go home.`

Try it online!

const f = _=>`It's ${Date().split` `[3]} already, folks, go home.`

console.log(f())

Japt, 31 bytes

`It's {Ki} alÎ%y, folks, go Êà.

Try it online!

PowerShell 3.0, 44 bytes

"It's $(date|% y*) already, folks, go home."

PowerShell is competing quite well today!

C#, 58 bytes

()=>"It's "+DateTime.Now.Year+" already, folks, go home.";

Anonymous function which returns the required string.

Full program:

using System;

public class Program
{
    public static void Main()
    {
        Func<string> f=
        ()=>"It's "+DateTime.Now.Year+" already, folks, go home.";

        Console.WriteLine(f());
    }
}

Pyth, 38 bytes

s["It's ".d3" already, folks, go home.

Online interpreter.

Haskell, 113 bytes

import Data.Time.Clock
f=do t<-getCurrentTime;putStr$"It's "++(fst.span(>'-').show)t++" already, folks, go home."

Try it online! Replace f with main for a full program.

The function getCurrentTime returns a UTCTime object which looks something like "2017-04-02 10:22:29.8550527 UTC" when converted to a string by show. fst.span(>'-') takes the leading characters while they are larger than '-', that is the current year. For the next 7972 years take 4 would work for 8 bytes less, but we want our code to work correctly for ever and ever.

As far as I see build-in functions to get the current year require a import Data.Time.Calendar, so extracting the year from the string should be the shortest option.

JavaScript, 77 71 67 63 bytes

alert("It's "+Date().split(' ')[3]+" already, folks, go home.")

Thanks to @programmer5000 for the spaces!

JavaScript ES6 66 60 bytes

alert(`It's ${Date().split` `[3]} already, folks, go home.`)

R, 62 59 62 bytes

cat("It's",format(Sys.time(),"%Y"),"already, folks, go home.")

Befunge-98, 57 55 bytes

"emoh og ,sklof ,ydaerla@ s'tI"4k,y\4*:*/"&2"*+.f7+k,@

Try it online!

Thanks to James Holderness for pointing out my mistake with the sysinfo instruction.

"emoh og ,sklof ,ydaerla@ s'tI" pushes the sentence to the stack where 4k, prints the first word. y is the sysinfo instruction. When passed 20 (the unprintable in the string), it returns 256*256*(year-1900) + 256*month + day of month. \4*:*/"&2"*+. takes just the year from the value and prints it andf7+k, prints the rest of the sentence.

GolfScript, 48 bytes

"It's #{Time.new.year} already, folks, go home."

Try it online!

Yes, this is string interpolation.

MATL, 42 bytes

'It''s '1&Z'V' already, folks, go home.'&h

Try it online!

'It''s '                      % Push this string
1&Z'                          % Push current year
V                             % Convert to string
' already, folks, go home.'   % Push this string
&h                            % Concatenate all stack contents horizontally
                              % Implicitly display

Python 3, 73 68 bytes

import time
print(time.strftime("It's %Y already, folks, go home."))

Very basic answer. The "%Y" gets the current year.

Thanks to @ovs for removing 5 bytes

IBM/Lotus Notes Formula, 54 bytes

Not exactly challenging but here we go anyway...

"It's "+@Text(@Year(@Now))+" already, folks, go home."

Java 8, 81 78 bytes

()->System.out.print("It's "+java.time.Year.now()+" already, folks, go home.")

T-SQL, 66 bytes

print concat('It''s ',year(getdate()),' already, folks, go home.')