Differences between revisions 1 and 36 (spanning 35 versions)

User Commands Int2Hex and Hex2Int

Outdated: the Dyalog built-in user command got improved and can now deal with the cases outlined on this page.

Overview

Although Dyalog comes from two built-in user commands for converting a hex number into an integer and vice versa (]ToHex and ]FromHex), fromHex is too limited to be really useful.

For example, is one wishes to convert an error code returned by the Windows Task Scheduler:

      ]tohex 2147942667                              
* Command Execution Failed: must be 32 bits signed integer

With the excellent function Hex written and contributed by PhilLast - which is the internal engine of the two user commands - this can be avoided:

      ]Int2hex 2147942667                              
8007010b
      ]Hex2Int 8007010b
2147942667

This is Phil's underlying code:

      Hex←{
          ⎕IO←0 ⋄ ⎕ML←1
          t←0∊⊃⍬⍴0⍴⊂⍵
          a←⎕D,'abcdef',⎕D,6⍴⎕A
          t:a⌷⍨⊂⍉16⊥⍣¯1⊢⍵
          16⊥⍉16|a⍳⍵
    ⍝ ⍵ dec-number or hex-string
    ⍝ ← hex-string or dec-number
    ⍝   accepts hex as CAPS or small
    ⍝   returns hex as small
    ⍝   dec to hex is rank increasing
    ⍝   hex to dec is rank decreasing
      }

Download

Download the script.

Authors: Logic=PhilLast, user command=KaiJaeger

CategoryDyalogUserCommands

-  ⇤ ← Revision 1 as of 2009-10-20 19:38:59 → 
  Size: 1781
  Editor: KaiJaeger
  Comment:
+   ← Revision 36 as of 2019-05-30 07:48:57 → ⇥
  Size: 1511
  Editor: KaiJaeger
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
-= User Command ADOC (Dyalog) =
+= User Commands Int2Hex and Hex2Int =

|| ```Outdated: the Dyalog built-in user command got improved and can now deal with the cases outlined on this page.``` ||
-Line 5:
+Line 7:
-[[ADOC]] is a utility useful to generate documentation (semi-) automatically from class scripts as well as namespace scripts.
+Although Dyalog comes from two built-in user commands for converting a hex number into an integer and vice versa (`]ToHex` and `]FromHex`), `fromHex` is too limited to be really useful.
-Line 7:
+Line 9:
-Obviously it makes sense to make ADOCs services available as a User Command.

This page offers a small class script `ADOC` which is designed to do exactly that.

== Assumptions ==

When User Commands got introduced in Dyalog with version 12.1, the User Commands where expected to reside in a sub folder `Salt\Spice` inside the Dyalog installation folder.

The ADOC User Command assumes that there is a sibling folder of `SALT` named `UserCommands`. Please make sure that the [[ADOC]] script is copied into this folder `UserCommands`. This enables the User Command script to address the real ADOC script as `..\UserCommands\ADOC`.

The script '''ADOC''' attached to this page needs to go into `SALT\SPICE`

== Samples ==

Given that the two different ADOC scripts went into the right folders, this would be a sample session:
+For example, is one wishes to convert an error code returned by the Windows Task Scheduler:
-Line 24:
+Line 12:
-      ]?ADOC
"??" for general help, "?CMD" for more specific info on command CMD

 Group  Name         Description
 =====  ====         ===========
 ADOC   ADOC.Browse  Creates full documentation and displayes it in the default browser
        ADOC.List    Prints syntax of all public stuff to the session

      ]?ADOC.Browse
Command "ADOC.Browse". Syntax: 1 arguments; accepts switches -b=
Script location: ........\SALT\Spice\ADOC
Gathers all sort of information from a class script

      ]?ADOC.List
Command "ADOC.List".
Script location: ........\SALT\Spice\ADOC
Prints a list with all sorts of information to the session

]ADOC.Browse ADOC -b=Opera
Watch your browser
+      ]tohex 2147942667                              
* Command Execution Failed: must be 32 bits signed integer
-Line 46:
+Line 16:
-Author: KaiJaeger
+With the excellent function `Hex` written and contributed by PhilLast - which is the internal engine of the two user commands - this can be avoided:

{{{
      ]Int2hex 2147942667                              
8007010b
      ]Hex2Int 8007010b
2147942667
}}}

This is Phil's underlying code:

{{{
      Hex←{
          ⎕IO←0 ⋄ ⎕ML←1
          t←0∊⊃⍬⍴0⍴⊂⍵
          a←⎕D,'abcdef',⎕D,6⍴⎕A
          t:a⌷⍨⊂⍉16⊥⍣¯1⊢⍵
          16⊥⍉16|a⍳⍵
    ⍝ ⍵ dec-number or hex-string
    ⍝ ← hex-string or dec-number
    ⍝   accepts hex as CAPS or small
    ⍝   returns hex as small
    ⍝   dec to hex is rank increasing
    ⍝   hex to dec is rank decreasing
      }
}}}

== Download ==

[[attachment:Hex.dyalog | Download]] the script.

Authors: Logic=PhilLast, user command=KaiJaeger