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--- string_equations [2016/10/26 16:22] – created johnsoevans
+++ string_equations [2025/09/19 15:18] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
+====== String Equations ======
+Topas v6 includes string equations.  Some examples:
+<code topas>                out_file  aac.out  ‘ This will throw an exception
+                out_file = aac.out; ‘  This will throw an exception
+                out_file = "aac.out";
+                out_file = String(aac.out);
+                out_file = If(Get(r_wp) < 10, "aac.out", "");
+                out_file = If(Get(r_wp) < 10, Concat(String(INP_File), ".OUT"), ""); </code>
+Some new string handling features are:
+<code topas>                prm aabb = 1.234;
+                prm sasb = 4.321;
+                prm sa = "aa";
+                prm sb = "bb";
+                prm sc = sb;
+                prm = Variable_Name_From_String(Concat(sa, sc)); :  1.23400`
+                prm = Variable_Name_From_String(Concat(String(sa), String(sb))); :  4.32100` </code>
+String and Variable_Name_From_String are new functions.