Difference between revisions of "Ar Next"

← Older edit

Ar Next (edit)

Revision as of 09:59, 10 December 2014

18 bytes added , 09:59, 10 December 2014

Improved example

Anonymous user

imported>Odessa

@@ Line 1: / Line 1: @@
 {{Function
   |origin = NVSE
-  |summary = Returns the next key of an array, after that specified. For regular arrays (list arrays) this is just equivalent to <b>(SpecifiedKey + 1)</b>. This function is most useful for map and stringmap arrays, where keys are dynamic. Note that map and stringmap arrays are always sorted in ascending numeric or alphanumeric order, regardless of the order of element insertion.
+  |summary = Returns the next key of an array, after the one specified. For regular arrays (list arrays) this is just equivalent to <b>(SpecifiedKey + 1)</b>. This function is most useful for map and stringmap arrays, where keys are dynamic.
+Note that map and stringmap arrays are always sorted in ascending numeric or alphanumeric order, regardless of the order elements were inserted.
 Returns a bad index ([[Ar_BadNumericIndex]] or [[Ar_BadStringIndex]]) if there is no next key in the array.
   |name = Ar_Next
-  |returnType = key:int-or-float-or-string
+  |returnType = key:int/float/string
   |arguments =
    {{FunctionArgument
     |Name = Source
     |Type = array}}{{FunctionArgument
-    |Name = Previous
+    |Name = Key
-    |Type = key}}}}
+    |Type = int/float/string}}}}
 ==Example==
 <pre>
 array_var MyMap
-int iKey ; * or float/string_var as appropriate for array
+float MapKey ; * or string_var as appropriate for array
+let MapKey := Ar_First MyMap ; * The First Key
-let iKey := Ar_First MyMap ; * get first element
+let MapKey := Ar_Next MyMap, MapKey ; * The Next Key
-while iKey != Ar_BadNumericIndex
+if MapKey == Ar_BadNumericIndex
-     ; do something for every valid key in array
+     ; Then there is no next key in the map
-    let iKey := Ar_Next MyMap, iKey
+endif
-loop
 </pre>