Data commit

Task/Collections/Icon/collections-1.icon

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+#  Creation of collections:
+ s := "abccd"                                   # string, an ordered collection of characters, immutable
+ c := 'abcd'                                    # cset, an unordered collection of characters, immutable
+ S := set()                                     # set, an unordered collection of unique values, mutable, contents may be of any type
+ T := table()                                   # table, an associative array of values accessed via unordered keys, mutable, contents may be of any type
+ L := []                                        # list, an ordered collection of values indexed by position 1..n or as stack/queue, mutable, contents may be of any type
+ record constructorname(field1,field2,fieldetc) # record, a collection of values stored in named fields, mutable, contents may be of any type (declare outside procedures)
+ R := constructorname()                         # record (creation)

Task/Collections/Icon/collections-2.icon

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+ s ||:= "xyz"                                   # concatenation
+ c ++:= 'xyz'                                   # union
+ insert(S,"abc")                                # insert
+ T["abc"] := "xyz"                              # insert create/overwrite
+ put(L,1)                                       # put (extend), also push
+ R.field1 := "xyz"                              # overwrite

Task/Collections/Icon/collections-3.icon

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+ S := S ++ S2                                   # union of two sets or two csets
+ S ++:= S2                                      # augmented assignment
+ L := L ||| L2                                  # list concatenation
+ L |||:= L2                                     # augmented assignment