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Utility function to sort with key

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This commit is contained in:
Kovid Goyal 2022-09-21 11:00:40 +05:30
parent e7f38929d9
commit b1e08adbce
No known key found for this signature in database
GPG Key ID: 06BC317B515ACE7C
3 changed files with 29 additions and 6 deletions
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5
go.mod
View File

@ -10,9 +10,10 @@ require (
github.com/seancfoley/ipaddress-go v1.2.1
github.com/spf13/cobra v1.5.0
github.com/spf13/pflag v1.0.5
golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90
golang.org/x/crypto v0.0.0-20220919173607-35f4265a4bc0
golang.org/x/exp v0.0.0-20220921023135-46d9e7742f1e
golang.org/x/image v0.0.0-20220902085622-e7cb96979f69
golang.org/x/sys v0.0.0-20220909162455-aba9fc2a8ff2
golang.org/x/sys v0.0.0-20220919091848-fb04ddd9f9c8
)
require (

10
go.sum
View File

@ -19,12 +19,14 @@ github.com/spf13/cobra v1.5.0 h1:X+jTBEBqF0bHN+9cSMgmfuvv2VHJ9ezmFNf9Y/XstYU=
github.com/spf13/cobra v1.5.0/go.mod h1:dWXEIy2H428czQCjInthrTRUg7yKbok+2Qi/yBIJoUM=
github.com/spf13/pflag v1.0.5 h1:iy+VFUOCP1a+8yFto/drg2CJ5u0yRoB7fZw3DKv/JXA=
github.com/spf13/pflag v1.0.5/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90 h1:Y/gsMcFOcR+6S6f3YeMKl5g+dZMEWqcz5Czj/GWYbkM=
golang.org/x/crypto v0.0.0-20220829220503-c86fa9a7ed90/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/crypto v0.0.0-20220919173607-35f4265a4bc0 h1:a5Yg6ylndHHYJqIPrdq0AhvR6KTvDTAvgBtaidhEevY=
golang.org/x/crypto v0.0.0-20220919173607-35f4265a4bc0/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
golang.org/x/exp v0.0.0-20220921023135-46d9e7742f1e h1:Ctm9yurWsg7aWwIpH9Bnap/IdSVxixymIb3MhiMEQQA=
golang.org/x/exp v0.0.0-20220921023135-46d9e7742f1e/go.mod h1:cyybsKvd6eL0RnXn6p/Grxp8F5bW7iYuBgsNCOHpMYE=
golang.org/x/image v0.0.0-20220902085622-e7cb96979f69 h1:Lj6HJGCSn5AjxRAH2+r35Mir4icalbqku+CLUtjnvXY=
golang.org/x/image v0.0.0-20220902085622-e7cb96979f69/go.mod h1:doUCurBvlfPMKfmIpRIywoHmhN3VyhnoFDbvIEWF4hY=
golang.org/x/sys v0.0.0-20220909162455-aba9fc2a8ff2 h1:wM1k/lXfpc5HdkJJyW9GELpd8ERGdnh8sMGL6Gzq3Ho=
golang.org/x/sys v0.0.0-20220909162455-aba9fc2a8ff2/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220919091848-fb04ddd9f9c8 h1:h+EGohizhe9XlX18rfpa8k8RAc5XyaeamM+0VHRd4lc=
golang.org/x/sys v0.0.0-20220919091848-fb04ddd9f9c8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=

20
tools/utils/misc.go
View File

@ -5,6 +5,8 @@ package utils
import (
"fmt"
"sort"
"golang.org/x/exp/constraints"
)
var _ = fmt.Print
@ -33,3 +35,21 @@ func StableSort[T any](s []T, less func(a, b T) bool) []T {
sort.SliceStable(s, func(i, j int) bool { return less(s[i], s[j]) })
return s
}
func SortWithKey[T any, C constraints.Ordered](s []T, key func(a T) C) []T {
mem := make([]C, len(s))
for i, x := range s {
mem[i] = key(x)
}
sort.Slice(s, func(i, j int) bool { return mem[i] < mem[j] })
return s
}
func StableSortWithKey[T any, C constraints.Ordered](s []T, key func(a T) C) []T {
mem := make([]C, len(s))
for i, x := range s {
mem[i] = key(x)
}
sort.SliceStable(s, func(i, j int) bool { return mem[i] < mem[j] })
return s
}