* How to convert a char to a property
@ 2010-07-27 8:29 Cecil Westerhof
2010-07-27 12:12 ` TheFlyingDutchman
2010-07-27 13:18 ` Cecil Westerhof
0 siblings, 2 replies; 6+ messages in thread
From: Cecil Westerhof @ 2010-07-27 8:29 UTC (permalink / raw)
To: help-gnu-emacs
I have the following property list:
(defvar dcbl-bbdb-user-defined-fields (list :L "mail-alias"
:M "mailer"
:P "playlist"
:s "subjects"
:t "type"
:w "website")
"User defined fields in the bbdb with parameter to insert into buffer")
With (getf dcbl-bbdb-user-defined-fields :M) I get "mailer".
But I want to work parameter driven. So for example I have:
(setq parameters "MLst")
(setq current-char (string-to-char parameters))
The variable current-char now contains 77. How could I use
current-char to retrieve "mailer"?
--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: How to convert a char to a property
2010-07-27 8:29 How to convert a char to a property Cecil Westerhof
@ 2010-07-27 12:12 ` TheFlyingDutchman
2010-07-27 22:06 ` Cecil Westerhof
2010-07-27 13:18 ` Cecil Westerhof
1 sibling, 1 reply; 6+ messages in thread
From: TheFlyingDutchman @ 2010-07-27 12:12 UTC (permalink / raw)
To: help-gnu-emacs
On Jul 27, 1:29 am, Cecil Westerhof <Ce...@decebal.nl> wrote:
> I have the following property list:
> (defvar dcbl-bbdb-user-defined-fields (list :L "mail-alias"
> :M "mailer"
> :P "playlist"
> :s "subjects"
> :t "type"
> :w "website")
> "User defined fields in the bbdb with parameter to insert into buffer")
>
> With (getf dcbl-bbdb-user-defined-fields :M) I get "mailer".
>
> But I want to work parameter driven. So for example I have:
> (setq parameters "MLst")
> (setq current-char (string-to-char parameters))
>
> The variable current-char now contains 77. How could I use
> current-char to retrieve "mailer"?
>
> --
> Cecil Westerhof
> Senior Software Engineer
> LinkedIn:http://www.linkedin.com/in/cecilwesterhof
(getf dcbl-bbdb-user-defined-fields
(intern (concat
":"
(char-to-string current-char) ) ) )
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: How to convert a char to a property
2010-07-27 8:29 How to convert a char to a property Cecil Westerhof
2010-07-27 12:12 ` TheFlyingDutchman
@ 2010-07-27 13:18 ` Cecil Westerhof
2010-07-27 17:59 ` Pascal J. Bourguignon
1 sibling, 1 reply; 6+ messages in thread
From: Cecil Westerhof @ 2010-07-27 13:18 UTC (permalink / raw)
To: help-gnu-emacs
Op dinsdag 27 jul 2010 10:29 CEST schreef Cecil Westerhof:
> I have the following property list:
> (defvar dcbl-bbdb-user-defined-fields (list :L "mail-alias"
> :M "mailer"
> :P "playlist"
> :s "subjects"
> :t "type"
> :w "website")
> "User defined fields in the bbdb with parameter to insert into buffer")
>
> With (getf dcbl-bbdb-user-defined-fields :M) I get "mailer".
>
> But I want to work parameter driven. So for example I have:
> (setq parameters "MLst")
> (setq current-char (string-to-char parameters))
>
> The variable current-char now contains 77. How could I use
> current-char to retrieve "mailer"?
At the moment I use another solution.
I now have:
(defvar dcbl-bbdb-user-defined-fields '(("L" "mail-alias")
("M" "mailer")
("P" "playlist")
("s" "subjects")
("t" "type")
("w" "website"))
"User defined fields in the bbdb with parameter to insert into buffer")
and use the following code:
(setq field-name nil
parameters dcbl-bbdb-user-defined-fields
this-value nil)
(while parameters
(setq this-parameter (car parameters)
parameters (cdr parameters))
(when (string= current-char (car this-parameter))
(setq field-name (car (cdr this-parameter))
parameters nil)))
The variable current-char is the parameter (as a string) that I am
searching for.
This does work, but I do not know if it is very efficient. Is this a
good solution, or should I code it differently?
--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: How to convert a char to a property
2010-07-27 13:18 ` Cecil Westerhof
@ 2010-07-27 17:59 ` Pascal J. Bourguignon
2010-07-27 22:11 ` Cecil Westerhof
0 siblings, 1 reply; 6+ messages in thread
From: Pascal J. Bourguignon @ 2010-07-27 17:59 UTC (permalink / raw)
To: help-gnu-emacs
Cecil Westerhof <Cecil@decebal.nl> writes:
> Op dinsdag 27 jul 2010 10:29 CEST schreef Cecil Westerhof:
>
>> I have the following property list:
>> (defvar dcbl-bbdb-user-defined-fields (list :L "mail-alias"
>> :M "mailer"
>> :P "playlist"
>> :s "subjects"
>> :t "type"
>> :w "website")
>> "User defined fields in the bbdb with parameter to insert into buffer")
>>
>> With (getf dcbl-bbdb-user-defined-fields :M) I get "mailer".
>>
>> But I want to work parameter driven. So for example I have:
>> (setq parameters "MLst")
>> (setq current-char (string-to-char parameters))
>>
>> The variable current-char now contains 77. How could I use
>> current-char to retrieve "mailer"?
>
> At the moment I use another solution.
>
> I now have:
> (defvar dcbl-bbdb-user-defined-fields '(("L" "mail-alias")
> ("M" "mailer")
> ("P" "playlist")
> ("s" "subjects")
> ("t" "type")
> ("w" "website"))
> "User defined fields in the bbdb with parameter to insert into buffer")
>
> and use the following code:
> (setq field-name nil
> parameters dcbl-bbdb-user-defined-fields
> this-value nil)
> (while parameters
> (setq this-parameter (car parameters)
> parameters (cdr parameters))
> (when (string= current-char (car this-parameter))
> (setq field-name (car (cdr this-parameter))
> parameters nil)))
>
> The variable current-char is the parameter (as a string) that I am
> searching for.
>
> This does work, but I do not know if it is very efficient. Is this a
> good solution, or should I code it differently?
If you have characters and want to map them, why do you make a table
mapping keywords or strings? Make a table mapping characters!
(defvar dcbl-bbdb-user-defined-fields '((?L . "mail-alias")
(?M . "mailer")
(?P . "playlist")
(?s . "subjects")
(?t . "type")
(?w . "website"))
"An a-list of User defined fields in the bbdb with parameter to insert into buffer")
(defun get-field-name-from-character (ch)
(cdr (assoc ch dcbl-bbdb-user-defined-fields)))
--
__Pascal Bourguignon__ http://www.informatimago.com/
^ permalink raw reply [flat|nested] 6+ messages in thread* Re: How to convert a char to a property
2010-07-27 17:59 ` Pascal J. Bourguignon
@ 2010-07-27 22:11 ` Cecil Westerhof
0 siblings, 0 replies; 6+ messages in thread
From: Cecil Westerhof @ 2010-07-27 22:11 UTC (permalink / raw)
To: help-gnu-emacs
Op dinsdag 27 jul 2010 19:59 CEST schreef Pascal J. Bourguignon:
>>> I have the following property list:
>>> (defvar dcbl-bbdb-user-defined-fields (list :L "mail-alias"
>>> :M "mailer"
>>> :P "playlist"
>>> :s "subjects"
>>> :t "type"
>>> :w "website")
>>> "User defined fields in the bbdb with parameter to insert into buffer")
>>>
>>> With (getf dcbl-bbdb-user-defined-fields :M) I get "mailer".
>>>
>>> But I want to work parameter driven. So for example I have:
>>> (setq parameters "MLst")
>>> (setq current-char (string-to-char parameters))
>>>
>>> The variable current-char now contains 77. How could I use
>>> current-char to retrieve "mailer"?
>>
>> At the moment I use another solution.
>>
>> I now have:
>> (defvar dcbl-bbdb-user-defined-fields '(("L" "mail-alias")
>> ("M" "mailer")
>> ("P" "playlist")
>> ("s" "subjects")
>> ("t" "type")
>> ("w" "website"))
>> "User defined fields in the bbdb with parameter to insert into buffer")
>>
>> and use the following code:
>> (setq field-name nil
>> parameters dcbl-bbdb-user-defined-fields
>> this-value nil)
>> (while parameters
>> (setq this-parameter (car parameters)
>> parameters (cdr parameters))
>> (when (string= current-char (car this-parameter))
>> (setq field-name (car (cdr this-parameter))
>> parameters nil)))
>>
>> The variable current-char is the parameter (as a string) that I am
>> searching for.
>>
>> This does work, but I do not know if it is very efficient. Is this a
>> good solution, or should I code it differently?
>
> If you have characters and want to map them, why do you make a table
> mapping keywords or strings? Make a table mapping characters!
>
>
> (defvar dcbl-bbdb-user-defined-fields '((?L . "mail-alias")
> (?M . "mailer")
> (?P . "playlist")
> (?s . "subjects")
> (?t . "type")
> (?w . "website"))
> "An a-list of User defined fields in the bbdb with parameter to insert into
> buffer")
>
> (defun get-field-name-from-character (ch)
> (cdr (assoc ch dcbl-bbdb-user-defined-fields)))
A very good idea. My temporary solution was quit inefficient. The
solution with getf is almost 15 times as fast as what I did. But your
solution is almost 2 times more efficient. Thanks.
--
Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2010-07-27 22:11 UTC | newest]
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2010-07-27 8:29 How to convert a char to a property Cecil Westerhof
2010-07-27 12:12 ` TheFlyingDutchman
2010-07-27 22:06 ` Cecil Westerhof
2010-07-27 13:18 ` Cecil Westerhof
2010-07-27 17:59 ` Pascal J. Bourguignon
2010-07-27 22:11 ` Cecil Westerhof
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