 
 
 # convert object x to a JSON string, removing any keys that have "pass" in them and
-# any values that are potentially big -- this is meant to only be used for loging.
+# any values that are potentially big -- this is meant to only be used for logging.
 exports.to_safe_str = (x) ->
     obj = {}
     for key, value of x

# Doesn't modify map.  If map is an array, just returns it
# with no change even if it has undefined values.
exports.map_without_undefined = map_without_undefined = (map) ->
    if is_array(map)
        return map
    if not map?
        return
    new_map = {}
    for k, v of map
        if not v?


exports.is_different_array = (a, b) ->
    ad = a?; bd = b?
    if (not ad) and (not bd)
        return false
    if ad isnt bd
        return true
    if a.length != b.length
        return true
