Differences

This shows you the differences between two versions of the page.

--- en:maps [2020/04/23 15:17]
admin created
+++ en:maps [2020/04/23 15:24] (current)
admin
@@ Line 2: / Line 2: @@
 Maps, also known ad dictionaries in Python, are created using the [[Map|Map]] statement.  They may hold numeric or string data.  Access to specific elements in a map is accomplished by using square brackets along with the string key associated with the element.
-You may use the [[arraylength|Array length]] [?] oerator or the [[Length|Length]] function.
+You may use the [[arraylength|Array length]] [?] operator or the [[Length|Length]] function.
+Internally maps are stores in alphabetic order. You may easily loop through a map using the [[fornext|For Next]] statement.
+<code>
+map grades
+grades['bob'] = 90
+grades['mary'] = 96
+grades['jimmy'] = 76
+total = 0
+foreach name in grades
+	? name, grades[name]
+	total = total + grades[name]
+next name
+? "the class average is", total/length(grades)
+</code>
+displays
+<code>
+bob           90
+jimmy         76
+mary          96
+the class average is        87.3333333333
+</code>
 ==== History ====
 |2.0.0.0|New to version|

DokuWiki