Re: [WebDNA] showif with empty variable
This WebDNA talk-list message is from 2015
It keeps the original formatting.
numero = 112181
interpreted = N
texte = I like your IsSet, but=E2=80=A6 I was amazed when I figured out you could use a single punctuation mark = as a function name so I had to do it. It=E2=80=99s easy to type (4 less = letters!) and avoids that whole annoying issue when you have to make = your function names international (example: in Canada IsSet becomes = SetEh ) A few years ago I learned (and have since mostly forgotten) Ruby on = Rails. The thing that frustrated me most about that language/framework = is how =E2=80=9Cmagical=E2=80=9D it is. Code works or doesn=E2=80=99t = work based on it=E2=80=99s context. It kind of ruins the readability of = the code, because code that works in one place, won=E2=80=99t work in = another because it=E2=80=99s out of context which isn=E2=80=99t very = well documented because DUH, you=E2=80=99re just supposed to know how it = works (well, that=E2=80=99s the feeling I got from the developer = community)=20 Anyway, [showif [IsSet selector]] vs. [showif [? selector]=3DF]. The = first changes the way people expect to see a showif. The 2nd is more = readable and accessible if someone else has to maintain the codebase = someday. Just my two cents, this isn=E2=80=99t a criticism, I just enjoy open = discussion to find the optimal solution to any given problem :) -Brian B. > On Mar 14, 2015, at 11:48 AM, Donovan Brooke
wrote: >=20 > Nice Brian! we think alike. >=20 > On looking at my IsSet function, which is similar to yours..=20 > I do rather: > [then]T=3DT[/then] > [else]T=3DF[/then] >=20 > This makes my call look something like this: >=20 > [showif [IsSet selector]] > [include file=3Dblank_page.inc] > [/showif] >=20 > Sincerely, > Donovan >=20 >=20 >=20 >=20 > On Mar 13, 2015, at 7:33 PM, Brian Burton wrote: >=20 >> This is what I use >>=20 >> [function name=3D?] >> [!] return T/F based on if a field exists and has a value[/!] >> [!] incoming variables: the name of the field to be tested i.e. [? = field] [/!] >> [If = ("[url][interpret][[params_string]][/interpret][/url]"!"%5B[interpret][par= ams_string][/interpret]%5D") & = ("[url][interpret][[params_string]][/interpret][/url]"!"")] >> [Then][return]T[/return][/Then] >> [Else][return]F[/return][/Else] >> [/If] >> [/function] >>=20 >> usage: [showif [? selector]=3DF] [include blank_page.inc] [/showif] >>=20 >>=20 >>=20
Associated Messages, from the most recent to the oldest:
I like your IsSet, but=E2=80=A6 I was amazed when I figured out you could use a single punctuation mark = as a function name so I had to do it. It=E2=80=99s easy to type (4 less = letters!) and avoids that whole annoying issue when you have to make = your function names international (example: in Canada IsSet becomes = SetEh ) A few years ago I learned (and have since mostly forgotten) Ruby on = Rails. The thing that frustrated me most about that language/framework = is how =E2=80=9Cmagical=E2=80=9D it is. Code works or doesn=E2=80=99t = work based on it=E2=80=99s context. It kind of ruins the readability of = the code, because code that works in one place, won=E2=80=99t work in = another because it=E2=80=99s out of context which isn=E2=80=99t very = well documented because DUH, you=E2=80=99re just supposed to know how it = works (well, that=E2=80=99s the feeling I got from the developer = community)=20 Anyway, [showif [IsSet selector]] vs. [showif [? selector]=3DF]. The = first changes the way people expect to see a showif. The 2nd is more = readable and accessible if someone else has to maintain the codebase = someday. Just my two cents, this isn=E2=80=99t a criticism, I just enjoy open = discussion to find the optimal solution to any given problem :) -Brian B. > On Mar 14, 2015, at 11:48 AM, Donovan Brooke wrote: >=20 > Nice Brian! we think alike. >=20 > On looking at my IsSet function, which is similar to yours..=20 > I do rather: > [then]T=3DT[/then] > [else]T=3DF[/then] >=20 > This makes my call look something like this: >=20 > [showif [IsSet selector]] > [include file=3Dblank_page.inc] > [/showif] >=20 > Sincerely, > Donovan >=20 >=20 >=20 >=20 > On Mar 13, 2015, at 7:33 PM, Brian Burton wrote: >=20 >> This is what I use >>=20 >> [function name=3D?] >> [!] return T/F based on if a field exists and has a value[/!] >> [!] incoming variables: the name of the field to be tested i.e. [? = field] [/!] >> [If = ("[url][interpret][[params_string]][/interpret][/url]"!"%5B[interpret][par= ams_string][/interpret]%5D") & = ("[url][interpret][[params_string]][/interpret][/url]"!"")] >> [Then][return]T[/return][/Then] >> [Else][return]F[/return][/Else] >> [/If] >> [/function] >>=20 >> usage: [showif [? selector]=3DF] [include blank_page.inc] [/showif] >>=20 >>=20 >>=20
Brian Burton
DOWNLOAD WEBDNA NOW!
Top Articles:
Talk List
The WebDNA community talk-list is the best place to get some help: several hundred extremely proficient programmers with an excellent knowledge of WebDNA and an excellent spirit will deliver all the tips and tricks you can imagine...
Related Readings:
Adding fields to tearoom shoppingcart invoice thanks (2004)
ghost dbs!? (2003)
database size? (1997)
foreign languages, email, webcat (1998)
Multiple catalog databases and showcart (1997)
Webmerchant confirmation hooks? (1997)
Photo Album (2000)
[WebDNA] Upgrade 4.5.1 to 6.0a (2009)
[include file=filename.inc&strip=t] (2002)
creative use of webcatalog (1998)
Associative lookup style? + bit more (1997)
bug in [SendMail] (1997)
Dubble Sku's in a Database (1999)
expired beta (1997)
Re:multiple digests, please stop (1997)
oops private message leaked into talk list (1997)
WebCat Admin access w/ClearlyHome p.i. (1997)
WebCatalog Mac 2.1b3 (1997)
Multiple Newcarts (1996)
Math with Time (1997)