Environment variables.
find ~empty_is_none name is the value of the environment variable name in the current process environment, if defined. If empty_is_none is true, None is returned if the variable value is the empty string.
val find' :
empty_is_none:bool ->
(string -> ('a, string) result) ->
string ->
('a option, string) resultfind' ~empty_is_none parse name is like find but the value is parsed with parse. If the latter errors with Error e, Error (Fmt.str "%s env: %s" name e) is returned.
type t = string String.Map.tThe type for process environments.
val empty : tempty is String.Map.empty.
The type for environments as lists of strings of the form "var=value".
val current_assignments : unit -> (assignments, string) resultcurrent_assignments () is the current process environment as assignments.
of_assignments ~init ss folds over strings in ss, cuts them at the leftmost '=' character and adds the resulting pair to init (defaults to empty). If the same variable is bound more than once, the last one takes over.
val to_assignments : t -> assignmentsto_assignments env is env's bindings as assignments.