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--- intro_example:namespace [2020/06/16 23:24]
prafull created
+++ intro_example:namespace [2020/12/02 01:00]
127.0.0.1 external edit
@@ Line 104: / Line 104: @@
 adder FA;
 </code>
+Finally, ACT supports another import format that is similar to those provided by object-oriented languages like Python and Java. Since ''gates.act'' defines the namespace ''gates'', it can be imported as follows:
+<code>
+import gates;
+defproc adder (bool? a,b,ci; bool! s,co)
+{
+  bool y1,y2,y3;
+  gates::xor2 X1(a, b, y1);
+  gates::and2 A1(a,b,y2);
+  gates::xor2 X2 (y1,ci,s);
+  gates::and2 A2(y1,ci,y3);
+  gates::or2 O1(y2,y3,co);
+}
+adder FA;
+</code>
+The ''import'' statement looks for ''gates.act'' (details are in [[language:namespaces|Namespaces]]), and imports it if it is found. It also checks that the namespace ''gates'' exists after the import.
+Finally, if you are going to be using the ''gates'' namespace a lot, it can be added to the search path used to find type definitions as follows.
+<code>
+import gates;
+open gates;
+defproc adder (bool? a,b,ci; bool! s,co)
+{
+  bool y1,y2,y3;
+  xor2 X1(a, b, y1);
+  and2 A1(a,b,y2);
+  xor2 X2 (y1,ci,s);
+  and2 A2(y1,ci,y3);
+  or2 O1(y2,y3,co);
+}
+adder FA;
+</code>
 ===== Simulating with prsim script =====