manual:chapter6:stack:cmd_drop

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manual:chapter6:stack:cmd_drop [2018/03/20 07:35]
claudio
manual:chapter6:stack:cmd_drop [2019/11/28 14:44] (current)
jojo1973 Added flags -28 and -29
Line 1: Line 1:
 ==== DROP ==== ==== DROP ====
 ---- ----
-<callout color="black" icon="fa fa-indent" title="Stack Diagram"> +<callout type="primary" color="" icon="fa fa-book" title="Synopsis"> 
-Input Stack ^  ^ Output Stack +---- 
-| **O** | → | <<Empty>> |+Remove one object from the top of the stack 
 +</callout> 
 + 
 +<callout color="green" icon="fa fa-indent" title="Stack Diagram"> 
 +---- 
 + __Input Stack__  ^  ^  __Output Stack__  
 + **O**   ****   | 
 +|  //Level 1//  |  //→//  |  //Level 1//  |  
 {{page>manual:chapter6:aux:legend&nofooter&noeditbtn&inline}} {{page>manual:chapter6:aux:legend&nofooter&noeditbtn&inline}}
  
-| **Command category** | [[..:|Stack]]  | +|**Type**| [[manual:chapter5:basics#commands|Command]]  |
-| **Can be used in symbolics** | No +|**Parallel list processing**| [[manual:chapter5:listproc#group-2commands-that-must-use-dolist-to-parallel-process|Group 2]]  ||  
-| **Affected by flags** | No |+|**Affected by flags**|  [[manual:appendix:flags#flag-28|-28]] | RPL / RPN stack mode  | 
 +|:::|  [[manual:appendix:flags#flag-29|-29]] | RPN stack depth  | 
 +</callout>
  
 +<callout color="orangered" icon="fa fa-comment" title="Description">
 ---- ----
-===Description=== +The ''DROP'' command deletes the object on the top of the stack, shifting the remaining ones by one level. 
-This command will remove one object from the top of the stack.+ 
 +When the stack is in RPN mode ''DROP'' fills immediately the bottom-most level of the stack (level 4 or level 8, depending on the selected stack depth) with the value it stored before the shift happened. 
 +</callout> 
 + 
 +<callout type="warning" icon="true" title="Compatibility">
 ---- ----
-===Related commands=== +This command is only partially compatible with userRPL
-DROPN DROP2 + 
-</callout> +In particular: 
-<callout type="success" icon="true"> +  * In userRPL RPN stack mode is not supported.
-===Compatibility=== +
-This command is fully compatible with userRPL.+
 </callout> </callout>
-<callout type="info" icon="true" title="Notes and Examples"> 
-The following program: 
  
-  « 123 DROP » +<callout type="info" icon="true" title="Usage"> 
-   +---- 
-Will have no effect on the stack.  +<code> 
 +3:            "This is a string" 
 +2:               { 'X' 'Y' 'Z'
 +1:                           1_m 
 +…………………………………………………………………………………… 
 +DROP 
 +</code> 
 +will result in 
 +<code> 
 +2:            "This is a string" 
 +1:               { 'X' 'Y' 'Z'
 +…………………………………………………………………………………… 
 + 
 +</code>
 </callout> </callout>
  
 +<callout color="darkgray" icon="fa fa-hand-o-right" title="Related Commands">
 +----
 +{{page>manual:chapter6:stack&nofooter&noeditbtn&inline}}
 +</callout>
  • manual/chapter6/stack/cmd_drop.1521556501.txt.gz
  • Last modified: 2018/03/20 07:35
  • by claudio