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Template for a table editor [▣=▣ ].
04-13-2019, 12:26 PM (This post was last modified: Yesterday 02:20 PM by compsystems.)
Post: #1
Template for a table editor [▣=▣ ].
Hello

There is a very useful data type TABLE, it works in a similar way to the Python DICTIONARY, unlike a matrix that addresses each position by means of a "coordinate" (rows, columns), a table is addressed by a label that can be a number, a string of characters or a coordinate.

The TABLE editor is similar to the matrix editor. Simply for each position there would be two entries one for the label and one for the content.

The template for the table editor will be included in an icon next to the rest of the templates (key C / templates)

Examples

PHP Code:
tbl1:= table( (0,0)=9p1=[9,8,7], 3=-10,"b"=20,"c"=30,"d"=40,"a"=10) [enterreturns

table
(
  
= -10,
  
p1 = [9,8,7],
  (
0,0) = 9,
  
"a" 10,
  
"b" 20,
  
"c" 30,
  
"d" 40



PHP Code:
tbl1["a"] [enter]  returns 10
tbl1
[3] [enter]  returns -10
tbl1
[(0,0)] [enter]  returns  9
tbl1
[p1] [enter]  returns  [9,8,7

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04-17-2019, 03:10 PM
Post: #2
RE: Template for a table editor [▣=▣ ].
(04-13-2019 12:26 PM)compsystems Wrote:  Hello

There is a very useful data type TABLE, it works in a similar way to the Python DICTIONARY, unlike a matrix that addresses each position by means of a "coordinate" (rows, columns), a table is addressed by a label that can be a number, a string of characters or a coordinate.

The TABLE editor is similar to the matrix editor. Simply for each position there would be two entries one for the label and one for the content.

The template for the table editor will be included in an icon next to the rest of the templates (key C / templates)

Examples

tbl1:= table( (0,0)=[9,8,7], 3=-10,"b"=20,"c"=30,"d"=40,"a"=10) [enter] returns

table(
(0,0)=[9,8,7],
3 = -10,
"a" = 10,
"b" = 20,
"c" = 30,
"d" = 40
)

tbl1["a"] [enter] returns 10
tbl1[3] [enter] returns -10
tbl1[(0,0)] [enter] returns [9,8,7]

Supposedly the TABLE command is buggy and will be deprecated at some point in the future. I can't find the thread right now but when I saw the TABLE command I got all excited until I read that it will be going away.

Tom L

If your parents didn't have any kids, chances are you won't either.
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04-17-2019, 05:58 PM
Post: #3
RE: Template for a table editor [▣=▣ ].
the TABLE command works perfectly in Xcas, the problem is that in the hpprime it converts the position from (0,0) to (1,1) and then interprets it as a complex number. 1 + 1*i

https://www.hpmuseum.org/forum/thread-12793.html

The good enough is the enemy of the excellent.
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04-17-2019, 10:52 PM
Post: #4
RE: Template for a table editor [▣=▣ ].
(04-17-2019 05:58 PM)compsystems Wrote:  the TABLE command works perfectly in Xcas, the problem is that in the hpprime it converts the position from (0,0) to (1,1) and then interprets it as a complex number. 1 + 1*i

https://www.hpmuseum.org/forum/thread-12793.html

Not that perfect. There is no way to delete (purge) table entries, for example (as far as I can tell).

— Ian Abbott
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Yesterday, 02:18 PM
Post: #5
RE: Template for a table editor [▣=▣ ].
Note: a coordinate as position cannot contain an array or list, to delete an element you use PURGE function

PHP Code:
tbl1:= table( (0,0)=9p1=[9,8,7], 3=-10,"b"=20,"c"=30,"d"=40,"a"=10) [enterreturns

table
(
  
= -10,
  
p1 = [9,8,7],
  (
0,0) = 9,
  
"a" 10,
  
"b" 20,
  
"c" 30,
  
"d" 40




PHP Code:
purgetbl1["a"] ) [enter1(Done)

tbl1 [enterreturns
table
(
  
= -10,
  
p1 = [9,8,7],
  (
0,0) = 9,
  
"b" 20,
  
"c" 30,
  
"d" 40


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