diff options
Diffstat (limited to 'pkg/utils')
-rw-r--r-- | pkg/utils/utils.go | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/pkg/utils/utils.go b/pkg/utils/utils.go index 1b69a9a5b..42529776f 100644 --- a/pkg/utils/utils.go +++ b/pkg/utils/utils.go @@ -322,3 +322,29 @@ func ModuloWithWrap(n, max int) int { return n } } + +// NextIntInCycle returns the next int in a slice, returning to the first index if we've reached the end +func NextIntInCycle(sl []int, current int) int { + for i, val := range sl { + if val == current { + if i == len(sl)-1 { + return sl[0] + } + return sl[i+1] + } + } + return sl[0] +} + +// PrevIntInCycle returns the prev int in a slice, returning to the first index if we've reached the end +func PrevIntInCycle(sl []int, current int) int { + for i, val := range sl { + if val == current { + if i > 0 { + return sl[i-1] + } + return sl[len(sl)-1] + } + } + return sl[len(sl)-1] +} |