manual:chapter3:lists

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manual:chapter3:lists [2021/08/15 14:18]
claudio [Operating with Lists]
manual:chapter3:lists [2021/08/15 14:51] (current)
claudio [Elements within a List]
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 will result in ''{ 1 2 3 4 5 6 }'' will result in ''{ 1 2 3 4 5 6 }''
  
-Other common commands that are specific for lists include (look into the command reference for details on specific commands). +Other common commands that operate on lists are:
-[[manual:chapter6:lists|Operations with Lists]] +
-{{namespace>manual:chapter6:lists&nofooter&noeditbtn}}+
  
   * ''→LIST'': Creates a list from loose objects in the stack   * ''→LIST'': Creates a list from loose objects in the stack
   * ''LIST→'': Split a list into individual objects in the stack   * ''LIST→'': Split a list into individual objects in the stack
   * ''SORT'': Sort the elements of a list   * ''SORT'': Sort the elements of a list
-  * +  * ''REVLIST'': Reverses the order of a list
  
  
-==== Operating with Lists ====+==== Elements within a List ==== 
 + 
 +Elements in a list can be referred to by a numeric index. The index starts at ''1'' for the first element of the list. To get an element from a list, the ''GET'' command is used: 
 +<code> 
 +2:                  { 11 12 13 } 
 +1:                             2 
 +…………………………………………………………………………………… 
 +GET 
 +</code> 
 +will result in ''12''
 + 
 +Replacing an element is done via the ''PUT'' command: 
 + 
 +<code> 
 +3:                  { 11 12 13 } 
 +2:                             2 
 +1:                             3 
 +…………………………………………………………………………………… 
 +PUT 
 +</code> 
 +will result in ''{ 11 3 13 }'' because the object ''3'' replaced the object at index ''2'' 
 + 
 +Elements of a list can also be accessed from within algebraic expression (read-only) by giving the list a name (store the list in a variable using ''STO'' or ''LSTO'') and then including the index in parenthesis, much like a mathematical function. 
 +For example, assuming the list ''{ 11 12 13 }'' was stored in variable ''L'', evaluating ''%%'L(2)+10'%%'' will result in ''22'' as expected. 
 +==== Procedures with Lists ====
  • manual/chapter3/lists.1629062326.txt.gz
  • Last modified: 2021/08/15 14:18
  • by claudio