envutil

func EnvPrefix ¶

func EnvPrefix(name string) string

func Merge ¶ added in v0.4.13

func Merge(sets ...[]string) []string

This function merges environment entry sets left to right, so a later set overrides an earlier one. Entries use the KEY=VALUE form, split on the first "=". A repeated key keeps its first-seen position and takes its last-seen value, so Merge([]string{"A=1"}, []string{"A=2"}) returns ["A=2"].

An entry with no "=" is passed through unchanged in place and is never used as a merge key. Keys are case sensitive.

The result is newly allocated and never aliases an input. It has a time complexity of O(n) in the total number of entries.