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我写的代码与领导写的代码,有何区别?

  • 2020-02-16
  • 本文字数:4788 字

    阅读完需:约 16 分钟

我写的代码与领导写的代码,有何区别?

在程序员圈子有很多有趣的等级划分规则,例如格子衬衫是程序员不能放弃的自尊心,衬衫上的格子数目越多,等级越高,技术越厉害;秃顶是尊贵身份的象征,发际线越高,等级越高,经验越丰富;而代码则是一个轮回,随着等级的变化,你会发现你写的代码又回到了“最初的美好”!


编者小贴士:本文仅供娱乐,博君一笑!


首先,我们先来看看不同级别的程序员写的代码都是怎样的?在这里我们把程序员从学生到 CEO 共分成了 14 个等级,快来看看,你和你领导写的代码,差在哪里?

初高中同学写的代码

  10 PRINT "HELLO WORLD"
20 END

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大学一年级同学写的代码


program Hello(input, output)
begin
writeln('Hello World')
end.
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大学四年级同学写的代码

  (defun hello
(print
(cons 'Hello (list 'World))))

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初入职场菜鸟程序员写的代码

  #include <stdio.h>
void main(void)
{
char *message[] = {"Hello ", "World"};
int i;

for(i = 0; i < 2; ++i)
printf("%s", message[i]);
printf("\n");
}
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工作多年的资深程序员写的代码

  #include <iostream.h>
#include <string.h>

class string
{
private:
int size;
char *ptr;

string() : size(0), ptr(new char[1]) { ptr[0] = 0; }

string(const string &s) : size(s.size)
{
ptr = new char[size + 1];
strcpy(ptr, s.ptr);
}

~string()
{
delete [] ptr;
}

friend ostream &operator <<(ostream &, const string &);
string &operator=(const char *);
};

ostream &operator<<(ostream &stream, const string &s)
{
return(stream << s.ptr);
}

string &string::operator=(const char *chrs)
{
if (this != &chrs)
{
delete [] ptr;
size = strlen(chrs);
ptr = new char[size + 1];
strcpy(ptr, chrs);
}
return(*this);
}

int main()
{
string str;

str = "Hello World";
cout << str << endl;

return(0);
}

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骨灰级程序员写的代码

  [
uuid(2573F8F4-CFEE-101A-9A9F-00AA00342820)
]
library LHello
{
// bring in the master library
importlib("actimp.tlb");
importlib("actexp.tlb");

// bring in my interfaces
#include "pshlo.idl"

[
uuid(2573F8F5-CFEE-101A-9A9F-00AA00342820)
]
cotype THello
{
interface IHello;
interface IPersistFile;
};
};

[
exe,
uuid(2573F890-CFEE-101A-9A9F-00AA00342820)
]
module CHelloLib
{

// some code related header files
importheader(<windows.h>);
importheader(<ole2.h>);
importheader(<except.hxx>);
importheader("pshlo.h");
importheader("shlo.hxx");
importheader("mycls.hxx");

// needed typelibs
importlib("actimp.tlb");
importlib("actexp.tlb");
importlib("thlo.tlb");

[
uuid(2573F891-CFEE-101A-9A9F-00AA00342820),
aggregatable
]
coclass CHello
{
cotype THello;
};
};
#include "ipfix.hxx"
extern HANDLE hEvent;
class CHello : public CHelloBase
{
public:
IPFIX(CLSID_CHello);

CHello(IUnknown *pUnk);
~CHello();

HRESULT __stdcall PrintSz(LPWSTR pwszString);

private:
static int cObjRef;
};
#include <windows.h>
#include <ole2.h>
#include <stdio.h>
#include <stdlib.h>
#include "thlo.h"
#include "pshlo.h"
#include "shlo.hxx"
#include "mycls.hxx"

int CHello::cObjRef = 0;

CHello::CHello(IUnknown *pUnk) : CHelloBase(pUnk)
{
cObjRef++;
return;
}

HRESULT __stdcall CHello::PrintSz(LPWSTR pwszString)
{
printf("%ws
", pwszString);
return(ResultFromScode(S_OK));
}

CHello::~CHello(void)
{

// when the object count goes to zero, stop the server
cObjRef--;
if( cObjRef == 0 )
PulseEvent(hEvent);

return;
}

#include <windows.h>
#include <ole2.h>
#include "pshlo.h"
#include "shlo.hxx"
#include "mycls.hxx"

HANDLE hEvent;

int _cdecl main(
int argc,
char * argv[]
) {
ULONG ulRef;
DWORD dwRegistration;
CHelloCF *pCF = new CHelloCF();

hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);

// Initialize the OLE libraries
CoInitializeEx(NULL, COINIT_MULTITHREADED);

CoRegisterClassObject(CLSID_CHello, pCF, CLSCTX_LOCAL_SERVER,
REGCLS_MULTIPLEUSE, &dwRegistration);

// wait on an event to stop
WaitForSingleObject(hEvent, INFINITE);

// revoke and release the class object
CoRevokeClassObject(dwRegistration);
ulRef = pCF->Release();

// Tell OLE we are going away.
CoUninitialize();

return(0); }

extern CLSID CLSID_CHello;
extern UUID LIBID_CHelloLib;

CLSID CLSID_CHello = { /* 2573F891-CFEE-101A-9A9F-00AA00342820 */
0x2573F891,
0xCFEE,
0x101A,
{ 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }
};

UUID LIBID_CHelloLib = { /* 2573F890-CFEE-101A-9A9F-00AA00342820 */
0x2573F890,
0xCFEE,
0x101A,
{ 0x9A, 0x9F, 0x00, 0xAA, 0x00, 0x34, 0x28, 0x20 }
};

#include <windows.h>
#include <ole2.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "pshlo.h"
#include "shlo.hxx"
#include "clsid.h"

int _cdecl main(
int argc,
char * argv[]
) {
HRESULT hRslt;
IHello *pHello;
ULONG ulCnt;
IMoniker * pmk;
WCHAR wcsT[_MAX_PATH];
WCHAR wcsPath[2 * _MAX_PATH];

// get object path
wcsPath[0] = '\0';
wcsT[0] = '\0';
if( argc > 1) {
mbstowcs(wcsPath, argv[1], strlen(argv[1]) + 1);
wcsupr(wcsPath);
}
else {
fprintf(stderr, "Object path must be specified\n");
return(1);
}

// get print string
if(argc > 2)
mbstowcs(wcsT, argv[2], strlen(argv[2]) + 1);
else
wcscpy(wcsT, L"Hello World");

printf("Linking to object %ws\n", wcsPath);
printf("Text String %ws\n", wcsT);

// Initialize the OLE libraries
hRslt = CoInitializeEx(NULL, COINIT_MULTITHREADED);

if(SUCCEEDED(hRslt)) {


hRslt = CreateFileMoniker(wcsPath, &pmk);
if(SUCCEEDED(hRslt))
hRslt = BindMoniker(pmk, 0, IID_IHello, (void **)&pHello);

if(SUCCEEDED(hRslt)) {

// print a string out
pHello->PrintSz(wcsT);

Sleep(2000);
ulCnt = pHello->Release();
}
else
printf("Failure to connect, status: %lx", hRslt);

// Tell OLE we are going away.
CoUninitialize();
}

return(0);
}

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菜鸟黑客写的代码

  #!/usr/local/bin/perl
$msg="Hello, world.\n";
if ($#ARGV >= 0) {
while(defined($arg=shift(@ARGV))) {
$outfilename = $arg;
open(FILE, ">" . $outfilename) || die "Can't write $arg: $!\n";
print (FILE $msg);
close(FILE) || die "Can't close $arg: $!\n";
}
} else {
print ($msg);
}
1;

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有经验的黑客写的代码

  #include <stdio.h>
#define S "Hello, World\n"
main(){exit(printf(S) == strlen(S) ? 0 : 1);}

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资深黑客写的代码

  % cc -o a.out ~/src/misc/hw/hw.c
% a.out

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骨灰级黑客大师写的代码

  % echo "Hello, world."

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新任的初级经理写的代码

  10 PRINT "HELLO WORLD"
20 END

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中级经理写的代码

  mail -s "Hello, world." bob@b12
Bob, could you please write me a program that prints "Hello, world."?
I need it by tomorrow.
^D

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高级经理写的代码

  % zmail jim
I need a "Hello, world." program by this afternoon.

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公司 CEO 写的代码

  % letter
letter: Command not found.
% mail
To: ^X ^F ^C
% help mail
help: Command not found.
% damn!
!: Event unrecognized
% logout

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看完不同级别程序员的代码之后,你是不是也有所触动呢?上面的例子可能有点宽泛,接下来我们就集中在 Go 语言,看看不同级别的程序员都是怎么样写代码的?

初级 Go 语言程序员写的代码

package fac
func Factorial(n int) int { res := 1
for i := 1; i <= n; i++ { res *= i }
return res}

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功能性 Go 语言程序员写的代码

package fac
func Factorial(n int) int { if n == 0 { return 1 } else { return Factorial(n - 1) * n }}

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通用 Go 语言程序员写的代码

package fac
func Factorial(n interface{}) interface{} { v, valid := n.(int) if !valid { return 0 }
res := 1
for i := 1; i <= v; i++ { res *= i }
return res}

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多线程优化的 Go 语言程序员写的代码

 package fac
import "sync"
func Factorial(n int) int { var ( left, right = 1, 1 wg sync.WaitGroup )
wg.Add(2)
pivot := n / 2
go func() { for i := 1; i < pivot; i++ { left *= i }
wg.Done() }()
go func() { for i := pivot; i <= n; i++ { right *= i }
wg.Done() }()
wg.Wait()
return left * right}
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利用 Go 设计模式的程序员写的代码

package fac
func Factorial(n int) <-chan int { ch := make(chan int)
go func() { prev := 1
for i := 1; i <= n; i++ { v := prev * i
ch <- v
prev = v }
close(ch) }()
return ch}

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利用成熟的 Go 解决方案写的代码

package fac
/** * @see https://en.wikipedia.org/wiki/Factorial */type IFactorial interface { CalculateFactorial() int}
// FactorialImpl implements IFactorial.var _ IFactorial = (*FactorialImpl)(nil)
/** * Used to find factorial of the n. */type FactorialImpl struct { /** * The n. */ n int}
/** * Constructor of the FactorialImpl. * * @param n the n. */func NewFactorial(n int) *FactorialImpl { return &FactorialImpl{ n: n, }}
/** * Gets the n to use in factorial function. * * @return int. */func (this *FactorialImpl) GetN() int { return this.n}
/** * Sets the n to use in factorial function. * * @param n the n. * @return void. */func (this *FactorialImpl) SetN(n int) { this.n = n}
/** * Returns factorial of the n. * * @todo remove "if" statement. Maybe we should use a factory or somthing? * * @return int. */func (this *FactorialImpl) CalculateFactorial() int { if this.n == 0 { return 1 }
n := this.n this.n = this.n - 1
return this.CalculateFactorial() * n}

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高级 Go 语言程序员写的代码

package fac
// Factorial returns !n.func Factorial(n int) int { res := 1
for i := 1; i <= n; i++ { res *= i }
return res}

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类似于 Rob Pike 宗师级程序员写的代码

package fac
// Factorial returns !n.func Factorial(n int) int { res := 1
for i := 1; i <= n; i++ { res *= i }
return res}

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原文链接:


https://www.ariel.com.au/jokes/The_Evolution_of_a_Programmer.html


https://github.com/SuperPaintman/the-evolution-of-a-go-programmer#the-evolution-of-a-go-programmer


2020-02-16 11:565123

评论 2 条评论

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感觉是熟悉一个套路之后,直接移植使用吧。。。
2020-03-28 14:27
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大道至简
2020-02-27 11:19
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没有更多了
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