feature

内容

Installation

go get github.com/antlabs/pcopy

Quick start

package mainimport ("fmt""github.com/antlabs/pcopy")typedststruct {IDintResultstring}typesrcstruct{IDintTextstring}funcmain() {d,s:=dst{},src{ID:3}pcopy.Preheat(&dst{},&src{})// 一对类型只要预热一次pcopy.Copy(&d,&s,pcopy.WithUsePreheat())fmt.Printf("%#v\n",d)   }

copy slice

package mainimport ("fmt""github.com/antlabs/pcopy")funcmain() {i:= []int{1,2,3,4,5,6}varo []intpcopy.Preheat(&o,&i)pcopy.Copy(&o,&i,pcopy.WithUsePreheat())fmt.Printf("%#v\n",o)}

copy map

package mainimport ("fmt""github.com/antlabs/pcopy")funcmain() {i:=map[string]int{"cat":100,"head":10,"tr":3,"tail":44,        }varomap[string]intpcopy.Preheat(&o,&i)pcopy.Copy(&o,&i,pcopy.WithUsePreheat())fmt.Printf("%#v\n",o)}

simplify business code development

typeoptionstruct {IntintFloat64float64Sstring}funcmain() {vara,boptionifb.Int!=0 {a.Int=b.Int        }ifb.Float64!=0.0 {a.Float64=b.Float64        }ifb.S!="" {a.S=b.S        }pcopy.Preheat(&a,&b)//只要预热一次//可以约化成pcopy.Copy(&a,&b,pcopy.WithUsePreheat())}

benchmark

goos: darwingoarch: arm64pkg: benchmarkBenchmark_Use_reflectValue_MiniCopy-8     334728      3575 ns/opBenchmark_Use_reflectValue_DeepCopy-8     595302      1956 ns/opBenchmark_Use_reflectValue_Copier-8       203574      5860 ns/opBenchmark_Use_Ptr_jsoniter-8              821113      1477 ns/opBenchmark_Use_Ptr_pcopy-8                3390382       354.0 ns/opBenchmark_Use_Ptr_coven-8                1414197       848.7 ns/opPASSok  benchmark9.771s

本项目压测

goos: darwingoarch: arm64pkg: github.com/antlabs/pcopyBenchmark_BaseMap_Unsafe_Pcopy-8                 529747      2343 ns/opBenchmark_BaseMap_miniCopy-8                      62181     19212 ns/opBenchmark_BaseMap_Reflect-8                       93810     12756 ns/opBenchmark_BaseSlice_Unsafe_Pcopy-8              2013764       595.1 ns/opBenchmark_BaseSlice_miniCopy-8                   154918      7728 ns/opBenchmark_BaseSlice_Reflect-8                    188720      6393 ns/opBenchmark_BaseType_Unsafe_Pcopy-8               4872112       243.8 ns/opBenchmark_BaseType_MiniCopy-8                    517814      2278 ns/opBenchmark_BaseType_Pcopy-8                       635156      1886 ns/opBenchmark_CompositeMap_Unsafe_Pcopy-8            486253      2409 ns/opBenchmark_CompositeMap_miniCopy-8                229674      5173 ns/opBenchmark_CompositeMap_Reflect-8                 475243      2490 ns/opBenchmark_GetLikeFavorited_Unsafe_Pcopy2-8       446907      2662 ns/opBenchmark_GetLikeFavorited_Unsafe_Pcopy-8        470217      2572 ns/opBenchmark_GetLikeFavorited_MiniCopy-8             85674     13989 ns/opBenchmark_GetLikeFavorited_Reflect_Pcopy-8       121603      9856 ns/opBenchmark_GetRedPoint_Unsafe_Pcopy-8            1626688       736.1 ns/opBenchmark_GetRedPoint_MiniCopy-8                 650004      1871 ns/opBenchmark_GetRedPoint_Reflect_Pcopy-8           1669778       722.0 ns/opBenchmark_Interface_Unsafe_Pcopy-8              2869022       421.3 ns/opBenchmark_Interface_MiniCopy-8                   413936      2704 ns/opBenchmark_Interface_Pcopy-8                      440250      2688 ns/opBenchmark_Interface_BaseSlice_Unsafe_Pcopy-8    1266501       947.4 ns/opBenchmark_Interface_BaseSlice_MiniCopy-8         141610      8422 ns/opBenchmark_Interface_BaseSlice_Pcopy-8            203906      5917 ns/opBenchmark_Ptr_BaseType1_Unsafe_Pcopy-8           910153      1310 ns/opBenchmark_Ptr_BaseType1_Reflect_Pcopy-8          391117      3026 ns/opBenchmark_Ptr_BaseSlice_Unsafe_Pcopy-8           698156      1704 ns/opBenchmark_Ptr_BaseSlice_Reflect_Pcopy-8          219999      5415 ns/opBenchmark_SliceWithStruct_Unsafe_Pcopy-8        1395982       860.3 ns/opBenchmark_SliceWithStruct_miniCopy-8             163154      7298 ns/opBenchmark_SliceWithStruct_Reflect_Pcopy-8        190728      6213 ns/op