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replace

container.Mutable_Tree_Map.replace

(k KEY, v VAL)
 => 
option VAL
add the mapping k -> v as a new entry to this map

returns the value that k previously mapped to, or nil if
k was not yet contained in this map
0.099dev (GIT hash d73ed58c41900ddb0f9db04a3da9b8f72f3699ad)
last changed: 2026-09-25