September 2021 - Pharo-users

Re: The ideal font for Pharo

by Kasper Osterbye

Wrt to emoji, I have at a number of times wanted to use other math symbols as binary methods (fx ââÂ´). For some symbols it is allowed, for some allowed the font does not show properly, and some are not allowed (eg âââ). Some letters in non-latin alphabets are allowed as keyword methods (for example one can use the âê®â - Cherokee Small Letter Nah) though it does not render. I was not able to trace down where in Pharo it is decided if something is a symbol or a letter, nor where it is decided if a character is legal or not as part of a selector. But it would be nice if Pharo was actually unicode in a somewhat consistent manner. Unicode defines character categories which can be used as definition. Whether it is possible to use emoji as both symbols and letters I do not know, but both seems âusefulâ. â Kasper > On 6 Sep 2021, at 22.41, Offray Vladimir Luna CÃ¡rdenas <offray.luna(a)mutabit.com> wrote: > > heh, heh, that emoji usage would be pretty cool > > ^ self ðð¤¯ > > On 6/09/21 2:31 p. m., Tim Mackinnon wrote: >> And is an emoji a binary or keyword element? >> >> Which could hilite some interesting programming usage if it would work? >> >> ^self ð >> >> Or >> >> ^a ð b >>

Sept. 7, 2021

Re: The ideal font for Pharo

by Offray Vladimir Luna CÃ¡rdenas

heh, heh, that emoji usage would be pretty cool ^ self ðð¤¯ On 6/09/21 2:31 p.Â m., Tim Mackinnon wrote: > And is an emoji a binary or keyword element? > > Which could hilite some interesting programming usage if it would work? > > ^self ð > > OrÂ > > ^a ð b > > > >> On 6 Sep 2021, at 19:53, Offray Vladimir Luna CÃ¡rdenas >> <offray.luna(a)mutabit.com> wrote: >> >> ï»¿ >> >> Now that we're talking of fonts. I wonder how difficult would be to >> support emojis on Pharo and if that could be solved at the font >> level. They have become part of day to day conversation and would be >> really good to show them in things like sentiment analysis. >> >> Cheers, >> >> Offray >> >> On 30/08/21 2:59 a.Â m., Guillermo Polito wrote: >>> Hi tau, >>> >>> Thanks for it, Iâll check it :) >>> >>>> El 26 ago 2021, a las 1:17, tau <tau(a)cedalion.info >>>> <mailto:tau@cedalion.info>> escribiÃ³: >>>> >>>> I've been bothered by the assignement operator (:=) and the way the >>>> colon and the equal sign aren't verticaly aligned when coding in >>>> Pharo. So I began a quest to find a pharo-friendly font were the >>>> colon and equal sign are aligned. Turn out most monospaced fonts >>>> don't qualify but I did find the following fonts: >>>> >>>> * Fira Code (https://fontlibrary.org/en/font/fira-code >>>> <https://fontlibrary.org/en/font/fira-code>) has a := ligature >>>> that doesn't work in Pharo. >>>> >>>> * Iosevka extended >>>> (https://fontlibrary.org/en/font/iosevka-extended >>>> <https://fontlibrary.org/en/font/iosevka-extended>) also has a >>>> := ligature that doen't work in Pharo. >>>> >>>> * Mononoki (https://fontlibrary.org/en/font/mononoki >>>> <https://fontlibrary.org/en/font/mononoki>) has the two >>>> characters properly aligned but I dislike the appareance of >>>> that font. The @, in particular, looks like it comes from a >>>> low-resolution terminal from the early '80s. >>>> >>>> * Fantasque Sans Mono >>>> (https://fontlibrary.org/en/font/fantasque-sans-mono >>>> <https://fontlibrary.org/en/font/fantasque-sans-mono>) has >>>> perfectly aligned colon and equal sign and moreover has a nice >>>> informal look. >>>> >>>> >>>> So, Fantasque Sans Mono is now my favorite font for coding in PharoÂ ð. >>>

Sept. 6, 2021

Re: The ideal font for Pharo

by Tim Mackinnon

And is an emoji a binary or keyword element? Which could hilite some interesting programming usage if it would work? ^self ð Or ^a ð b > On 6 Sep 2021, at 19:53, Offray Vladimir Luna CÃ¡rdenas <offray.luna(a)mutabit.com> wrote: > > ï»¿ > Now that we're talking of fonts. I wonder how difficult would be to support emojis on Pharo and if that could be solved at the font level. They have become part of day to day conversation and would be really good to show them in things like sentiment analysis. > > Cheers, > > Offray > > On 30/08/21 2:59 a. m., Guillermo Polito wrote: >> Hi tau, >> >> Thanks for it, Iâll check it :) >> >>> El 26 ago 2021, a las 1:17, tau <tau(a)cedalion.info> escribiÃ³: >>> >>> I've been bothered by the assignement operator (:=) and the way the colon and the equal sign aren't verticaly aligned when coding in Pharo. So I began a quest to find a pharo-friendly font were the colon and equal sign are aligned. Turn out most monospaced fonts don't qualify but I did find the following fonts: >>> >>> Fira Code (https://fontlibrary.org/en/font/fira-code) has a := ligature that doesn't work in Pharo. >>> Iosevka extended (https://fontlibrary.org/en/font/iosevka-extended) also has a := ligature that doen't work in Pharo. >>> Mononoki (https://fontlibrary.org/en/font/mononoki) has the two characters properly aligned but I dislike the appareance of that font. The @, in particular, looks like it comes from a low-resolution terminal from the early '80s. >>> Fantasque Sans Mono (https://fontlibrary.org/en/font/fantasque-sans-mono) has perfectly aligned colon and equal sign and moreover has a nice informal look. >>> >>> So, Fantasque Sans Mono is now my favorite font for coding in Pharo ð. >>

Sept. 6, 2021

Re: The ideal font for Pharo

by Offray Vladimir Luna CÃ¡rdenas

Now that we're talking of fonts. I wonder how difficult would be to support emojis on Pharo and if that could be solved at the font level. They have become part of day to day conversation and would be really good to show them in things like sentiment analysis. Cheers, Offray On 30/08/21 2:59 a.Â m., Guillermo Polito wrote: > Hi tau, > > Thanks for it, Iâll check it :) > >> El 26 ago 2021, a las 1:17, tau <tau(a)cedalion.info >> <mailto:tau@cedalion.info>> escribiÃ³: >> >> I've been bothered by the assignement operator (:=) and the way the >> colon and the equal sign aren't verticaly aligned when coding in >> Pharo. So I began a quest to find a pharo-friendly font were the >> colon and equal sign are aligned. Turn out most monospaced fonts >> don't qualify but I did find the following fonts: >> >> * Fira Code (https://fontlibrary.org/en/font/fira-code >> <https://fontlibrary.org/en/font/fira-code>) has a := ligature >> that doesn't work in Pharo. >> >> * Iosevka extended >> (https://fontlibrary.org/en/font/iosevka-extended >> <https://fontlibrary.org/en/font/iosevka-extended>) also has a := >> ligature that doen't work in Pharo. >> >> * Mononoki (https://fontlibrary.org/en/font/mononoki >> <https://fontlibrary.org/en/font/mononoki>) has the two >> characters properly aligned but I dislike the appareance of that >> font. The @, in particular, looks like it comes from a >> low-resolution terminal from the early '80s. >> >> * Fantasque Sans Mono >> (https://fontlibrary.org/en/font/fantasque-sans-mono >> <https://fontlibrary.org/en/font/fantasque-sans-mono>) has >> perfectly aligned colon and equal sign and moreover has a nice >> informal look. >> >> >> So, Fantasque Sans Mono is now my favorite font for coding in PharoÂ ð. >

Sept. 6, 2021

Fwd: DateInput5 in Seaside widget preinitialized value view

by Oswall Verny Arguedas C.

Regarding dateInput5 in Seaside. How a previously initialized date can be displayed in the form's dateInput5 widget. I use a pre-initialized date type value that is a property of the object to render on the form. html label for: 'startDate'; with: 'Start Date: '. html dateInput5 on: #startDate of: self contract; id: 'startDate'; step: 1; title: 'Start Date'; value: self contrato startDate; required. Widget don't render date initialized. I can't get it to show up. Thanks, Oswall

Sept. 6, 2021

Re: Silly question about storing and displaying currency amounts?

by Richard O'Keefe

I have ScaledDecimal, based on the ANSI Smalltalk standard, but fixed point decimal arithmetic, because that's what the ANSI Smalltalk standard calls for (citing a non-existent part of the LIA standard) but contradicts FixedPoint, a version of that specifically intended for plugging into Squeak and/or Pharo, the snag being that I don't seem to have kept the change set, just the master. I can recreate and donate the change set if anyone would like it. PackedDecimal, which just models VisualAge 31-digit packed decimal for interoperability, but does not do arithmetic. On Tue, 31 Aug 2021 at 19:44, Guillermo Polito <guillermopolito(a)gmail.com> wrote: > > Hi all, > > In the past months I worked a bit with it and found many problems too, like: > - doing scaled decimal arithmetics losing precision > https://github.com/pharo-project/pharo/issues/8668 > - strange default scale values > https://github.com/pharo-project/pharo/issues/8669 > > I also got hit with âdowngrading" issues during my vacation coding. For example, when operating a scaled decimal with a float, the result gets downgraded to a float. > See > > 17.777 asScaledDecimal + 0.0 > > From all the comments I understand that the current implementation is not very useful, they all lead to âdo not use it, instead do XXXâ where XXX is either > - write your own > - load that other package > - use an integer to represent pennies > > This this means that either it can be removed, or it can benefit with a new and better implementation. > I think it would be interesting to have a better ScaledDecimal implementation, that not only does precise printing but also precise arithmetics. > > Or maybe somebody has a good implementation already available? > > Cheers, > Guille > > > El 31 ago 2021, a las 0:58, Richard O'Keefe <raoknz(a)gmail.com> escribiÃ³: > > > > Ah, you have run into the insufficiently well known > > "ScaledDecimal looks like what you need but isn't". > > > > In VisualAge, you have a data type that is basically a reflection of iBM > > mainframe "packed decimal" format, and perfectly suits the needs of > > an SQL or COBOL interface. It gives you round-tripping with no error. > > > > In my Smalltalk, ScaledDecimal is a pair (n,s) where n and s are > > unrestricted integers, representing n * (10 raisedTo: s). This also > > gives you exact round-tripping and suits the needs of an SQL or COBOL > > interface. > > > > However, in Squeak and Pharo, ScaledDecimal is something else > > entirely. Basically, a pair (q,s) where q is an Integer or Fraction, > > and s is a scale factor used for *printing*. This doesn't just lead to > > oddities like two unequal ScaledDecimals printing identically, it > > leads to rounding issues. This is not a bug, it is ScaledDecimal working > > as designed. > > > > Working within Squeak, the simplest approach is to represent money as > > pence, and the next simplest is to make or find a Money class. > > > > On Tue, 31 Aug 2021 at 00:02, David Pennington <david(a)totallyobjects.com> wrote: > >> > >> Hi everyone. I have a little bank analysis package for my own use but having trouble displaying and storing amounts. I parse out a CSV file from the bank and convert the amounts from text to ScaledDecimal. I then store these into a STON file, which converts them back to text. I then read them in and convert them back to ScaledDecimal again. > >> > >> I am not used to ~Pharo have spent 24 years using VisualAge Smalltalk so I need a little bit of help because I am getting 1 Penny errors in the conversions. I can cope with this but I would like to get it right. > >> > >> Can anyone give me a simple means of managing, say, an amount like Â£76.49 from the bank so that it stops coming back to me as Â£76.48? > >> > >> David > >> Totally Objects

Sept. 1, 2021