Differences

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--- at:tutorial:basic [2007/04/04 09:17] – * elisag
+++ at:tutorial:basic [2007/04/04 11:03] – * elisag
@@ Line 33: / Line 33: @@
 ==== Tables ====
-As in Pico, indexed tables represent what other languages call arrays or lists. Tables indexes range from 1 to the size of the table. As variables, one can define, assign and refer to a table. Table definition is made also with the keyword def  in the following form:
+As in Pico, indexed tables represent what other languages call arrays or lists. Tables are unidimensional and their indexes range from 1 to the size of the table. As variables, one can define, assign and refer to a table. Table definition is also made  with the keyword **def** in the following form:
 <code>
 def t[ <size> ] { <expression> }
@@ Line 41: / Line 41: @@
 >def z := 0
 >>0
->def t[5] { z := z + 1 }
+>def table[5] { z := z + 1 }
 >>[1, 2, 3, 4, 5]
 </code>
-Table entries can also contain another tables. -> TOADD_1
+Although there is no special constructor for definition of multidimensional tables, a table entry can contain another table. This is internally stored as a unidimensional table whose entries are other tables.
+<code>
+>def vocals := ["a", "e", "i", "o", "u"]
+>>["a", "e", "i", "o", "u"]
+>table[3] := vocals
+>>[1, 2, ["a", "e", "i", "o", "u"], 4, 5]
+>table[3][2]
+>>"e"
+</code>
+As shown in the definition of the varible "vocals", evaluating a series of comma-separated abstract grammar values between square brackets (aka a tabulation) results in a table.
+<code>
+>[ 1, table, "ambientTalk"]
+>>[1, [1, 2, ["a", "e", "i", "o", "u"], 4, 5], "ambientTalk"]
+</code>
 ==== Functions ====
-As variables and tables, functions are defined with the keyworkd def in the form of:
+As variables and tables, functions are defined with the keyword **def** in the form of:
 <code>
 def functionname( <arglist> ) { <body> }
 </code>
-The argument list is just a list of local variables which are always evaluated one by one from left to right.  A basic function looks like this:
+The argument list is just a list of local variables which are always evaluated one by one from left to right. A basic function looks like this:
 <code>
 >def square (x) { x*x }