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--- manual:chapter6:stack:cmd_depth [2018/03/20 07:45]
claudio created
+++ manual:chapter6:stack:cmd_depth [2019/11/28 14:36]
jojo1973 Added flags -28 and -29
@@ Line 1: / Line 1: @@
 ==== DEPTH ====
 ----
-<callout color="black" icon="fa fa-indent" title="Stack Diagram">
+<callout type="primary" color="" icon="fa fa-book" title="Synopsis">
-^ Input Stack ^  ^ Output Stack ^
+----
-|  | → | **I** |
+Return the number of items present on the stack
+</callout>
+<callout color="green" icon="fa fa-indent" title="Stack Diagram">
+----
+^  __Input Stack__  ^  ^  __Output Stack__  ^
+|    |  **→**  |  **I<sub>depth</sub>**  |
+|  //Level 1//  |  //→//  |  //Level 1//  |
 {{page>manual:chapter6:aux:legend&nofooter&noeditbtn&inline}}
-| **Can be used in symbolics** | No |
+|**Type**| [[manual:chapter5:basics#commands|Command]]  ||
-| **Affected by flags** | No |
+|**Parallel list processing**| [[manual:chapter5:listproc#group-1commands-that-cannot-parallel-process|Group 1]]  ||
+|**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 ''DEPTH'' command puts on the level 1 of the stack the number of elements present on it before executing the command itself.
-Returns the number of items present on the stack before executing the command.
+When the stack is in RPN mode ''DEPTH'' always returns ''4'' or ''8'', depending on the selected stack depth.
+</callout>
+<callout type="warning" icon="true" title="Compatibility">
 ----
+This command is only partially compatible with userRPL.
+In particular:
+  * In userRPL RPN stack mode is not supported.
 </callout>
-<callout type="success" icon="true">
-===Compatibility===
-This command is fully compatible with userRPL.
-</callout>
-<callout type="info" icon="true" title="Notes and Examples">
-The following program:
-  « 123 DEPTH »
+<callout type="info" icon="true" title="Usage">
+----
-Will result in a stack containing ''123'' and ''1'' when executed on an empty stack.
+<code>
+:            "This is a string"
+:               { 'X' 'Y' 'Z' }
+:                           1_m
+……………………………………………………………………………………
+DEPTH
+</code>
+will result in
+<code>
+:            "This is a string"
+:               { 'X' 'Y' 'Z' }
+:                           1_m
+:                             3
+……………………………………………………………………………………
+</code>
 </callout>
-<callout color="black">
-===Related commands===
+<callout color="darkgray" icon="fa fa-hand-o-right" title="Related Commands">
+----
 {{page>manual:chapter6:stack&nofooter&noeditbtn&inline}}
 </callout>