Module:Ifexist and Module:Ifexist/sandbox: Difference between pages

(Difference between pages)

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--- This module implements {{If-exist}}
+--[[
- -- optional if template {{If}} seems difficult to use
+     Add your expirimental module code here
-local p = {}
+--]]
+local p = {} -- represents p as a code for packages
-function p.main(frame)
+function p.main(frame) -- package name = main, (frame) = global frame
-  title = frame.args[1] or '' -- PAGENAME
+  title = frame.args[1] -- parameter 1
-  thenthis = frame.args[2] --THEN RETURN THIS
+  thenthis = frame.args[2] -- parameter 2
-  elsethis = frame.args[3] --ELSE THIS
+  elsethis = frame.args[3] -- parameter 3
+--[[
+     If this then return this else return this
+--]]
   if mw.title.new(title).exists == true then
-  return thenthis
+ return thenthis
- else
+  else
-  return elsethis
+   return elsethis
--- if title exists then return this, if title doesn't exist then this
-   end
- if not title then
-  return error('Error at [[Template:If-exist]]: No page title found')
   end
+--[[
+     You can use the magic word ({{#ifexist:title|thenthis|elsethis}})
+--]]
 end
 return p

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