WoW:API pcall: Difference between revisions

WoW:API pcall (source)

7 bytes added , 2 August 2025

no edit summary

49

edits

@@ Line 18: / Line 18: @@
 == Example ==
- function myTest(incrementVal)
+<pre>
-   return incrementVal + 10;
+function myTest(incrementVal)
- end
+  return incrementVal + 10;
+end
- local retOK, ret1 = pcall(myTest,"string value");
+local retOK, ret1 = pcall(myTest,"string value");
- local msg = "";
+local msg = "";
- if (retOK) then
+if retOK then
    msg = "Function succeeded, result: " .. ret1 .. ".";
- else
+else
    msg = "Function failed, error text: " .. ret1 .. ".";
- end
+end
- DEFAULT_CHAT_FRAME:AddMessage(msg);
+DEFAULT_CHAT_FRAME:AddMessage(msg);
+</pre>
-====Result====
+==== Result ====
-pcall will catch the error that occured within 'myTest', and output the appropriate text to the default chat window. If "string value" is replaced by a number, the code will output number+10 instead.
+'pcall' will catch the error that occurred within 'myTest', and output the appropriate text to the default chat window. If "string value" is replaced by a number, the code will output number+10 instead.
 ==Details==
 : pcall will ''also'' return other arguments returned from the "function" if all is successful.