我写的代码与领导写的代码,有何区别?
2021/5/21 10:24:59
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1初高中同学写的代码10 PRINT "HELLO WORLD" 20 END2大学一年级同学写的代码
program Hello(input, output) begin writeln('Hello World') end.3大学四年级同学写的代码
(defun hello (print (cons 'Hello (list 'World))))4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"); }5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); }6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); }7菜鸟***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;8有经验的***写的代码
#include <stdio.h> #define S "Hello, World\n" main(){exit(printf(S) == strlen(S) ? 0 : 1);}9资深***写的代码
% cc -o a.out ~/src/misc/hw/hw.c % a.out10骨灰级***大师写的代码
% echo "Hello, world."11新任的初级经理写的代码
10 PRINT "HELLO WORLD" END12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. ^D13高级经理写的代码
% zmail jim I need a "Hello, world." program by this afternoon.14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?
1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}2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 }}3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}4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}5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}6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}7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}8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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