July 2017 - Pharo-users - lists.pharo.org

Re: [Pharo-users] In Praise of the Very Best Programming Language

by kmo

You've done a great job in promoting smalltalk and pharo. -- View this message in context: http://forum.world.st/In-Praise-of-the-Very-Best-Programming-Language-tp495… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

July 21, 2017

Re: [Pharo-users] How to calculate someone's age elegantly? Does Duration work?

by K K Subbu

On Friday 21 July 2017 03:01 PM, Tim Mackinnon wrote: > Actually that simplification doesnât work - someone born on 1/Mar/2000 > should be 11 on 1/Mar/2011 and this answers 10 (the previous version did > work). You're right. The simplification does not take into account leap days. Mea culpa. Original code (dropping +1) is readable and simple. Regards .. Subbu > This does make me think its tricky enough to put this in the core - I > may submit it along with the unit tests I borrowed from Stack Overflow > (the shame)â¦ > > Its a good problem though. Thanks for discussing it with me. > > Tim > >> On 21 Jul 2017, at 10:09, K K Subbu <kksubbu.ml(a)gmail.com >> <mailto:kksubbu.ml@gmail.com>> wrote: >> >> ^aDate year - self year - >> (aDate dayOfYear < self dayOfYear) ifTrue: [ 1 ] ifFalse: [ 0 ]) >

July 21, 2017

Re: [Pharo-users] How to calculate someone's age elegantly? Does Duration work?

by Tim Mackinnon

Actually that simplification doesnât work - someone born on 1/Mar/2000 should be 11 on 1/Mar/2011 and this answers 10 (the previous version did work). This does make me think its tricky enough to put this in the core - I may submit it along with the unit tests I borrowed from Stack Overflow (the shame)â¦ Its a good problem though. Thanks for discussing it with me. Tim > On 21 Jul 2017, at 10:09, K K Subbu <kksubbu.ml(a)gmail.com> wrote: > > ^aDate year - self year - > (aDate dayOfYear < self dayOfYear) ifTrue: [ 1 ] ifFalse: [ 0 ])

July 21, 2017

Critical issues for Dr. Geo on P6

by Hilaire

Hello people, Here are a few critical issues due to bugs or lack of information or feature for porting Dr. Geo to P6. There were others critical issues from P6 but were resolved and will be hopefully integrated, when ? * Minimal Dr. Geo image <https://bugs.launchpad.net/bugs/1705661> * Integration with Playground <https://bugs.launchpad.net/bugs/1701460> * Export bitmap to clipboard <https://bugs.launchpad.net/bugs/1697418><-- it will be really cool to have. <https://bugs.launchpad.net/bugs/1697418> * Universal package for 64 bits <https://bugs.launchpad.net/bugs/1705668> Other issues: https://launchpad.net/drgeo/+milestone/17.09 My initial plane and need is to finish the porting and test by the end of August. Not sure it sounds realistic. Hilaire -- Dr. Geo http://drgeo.eu

July 21, 2017

Re: [Pharo-users] How to calculate someone's age elegantly? Does Duration work?

by K K Subbu

I suppose no one needed it that badly ;-). Age is the difference in years except when the given date's julian is less than self's julian when it is less by 1, so the code can be simplified to: ^aDate year - self year - (aDate dayOfYear < self dayOfYear) ifTrue: [ 1 ] ifFalse: [ 0 ]) BTW, the code has an off-by-one error. +1 should be dropped in first age assignment. Regards .. Subbu On Friday 21 July 2017 12:55 PM, Tim Mackinnon wrote: > Yes that's a good solution, however I'm really surprised that with the plethora of dates, durations, timespans (we are well served with a very rich time and date domain) that this isn't already in the image? > > It seems very surprising. In fact the group I was working with (other language programmers) kept looking and looking for something as they felt certain they had overlooked it given all those promising classes. > > I'm curious why it's not in there? And would we also expect to find its equivalent on a timespan (maybe delegating back to this date method? This assumes that timespan can be fixed as it loses precision unexpectedly). > > Thanks for the reply. > > Tim > > > > Sent from my iPhone > >> On 21 Jul 2017, at 06:41, K K Subbu <kksubbu.ml(a)gmail.com> wrote: >> >> Date>>ageOn: aDate >> " assert: (self <= aDate) >> | age | >> >> age = aDate year - self year + 1. >> aDate monthIndex < self monthIndex ifTrue: [ ^age - 1 ]. >> (aDate monthIndex = self monthIndex and: [aDate dayOfMonth < self dayOfMonth]) ifTrue: [ ^age - 1 ]. >> ^age >> >> HTH .. Subbu >> >>> On Friday 21 July 2017 05:28 AM, Tim Mackinnon wrote: >>> Hi - I just ran a great MobProgramming session with Smalltalk for the XProLo group - and there was lots of great feedback and questions, however one of them really got me thinkingâ¦ >>> We did a little exercise to create a Person class with name, dob - and then we TDDâd an age methodâ¦ which seems simple on the surface but it gets to an interesting point - what about leap years? How old is someone on those years? >>> I thought that our plethora of Date/Duration classes might handle this - but I couldnât spot something obvious and was wondering if someone had a neat answer. >>> Essentially if you try: >>> age >>> ^Date today - self dob >>> You get a Duration, >>> But there isnât : >>> ^(Date today - self dob) asYears >>> There is is asDay >>> ^(Date today - self dob) asDays >>> But then can you really >>> ^(Date today - self dob) asDays / 365) truncated >>> But what about leap yearsâ¦ so >>> ^(Date today - self dob) asDays / 365.25) truncated >>> It all feels a bit inelegant and I suspect there is a better Smalltalk way that is eluding me? Any suggestions? >>> Tim >> >> > >

July 21, 2017

Re: [Pharo-users] How to calculate someone's age elegantly? Does Duration work?

by Tim Mackinnon

Yes that's a good solution, however I'm really surprised that with the plethora of dates, durations, timespans (we are well served with a very rich time and date domain) that this isn't already in the image? It seems very surprising. In fact the group I was working with (other language programmers) kept looking and looking for something as they felt certain they had overlooked it given all those promising classes. I'm curious why it's not in there? And would we also expect to find its equivalent on a timespan (maybe delegating back to this date method? This assumes that timespan can be fixed as it loses precision unexpectedly). Thanks for the reply. Tim Sent from my iPhone > On 21 Jul 2017, at 06:41, K K Subbu <kksubbu.ml(a)gmail.com> wrote: > > Date>>ageOn: aDate > " assert: (self <= aDate) > | age | > > age = aDate year - self year + 1. > aDate monthIndex < self monthIndex ifTrue: [ ^age - 1 ]. > (aDate monthIndex = self monthIndex and: [aDate dayOfMonth < self dayOfMonth]) ifTrue: [ ^age - 1 ]. > ^age > > HTH .. Subbu > >> On Friday 21 July 2017 05:28 AM, Tim Mackinnon wrote: >> Hi - I just ran a great MobProgramming session with Smalltalk for the XProLo group - and there was lots of great feedback and questions, however one of them really got me thinkingâ¦ >> We did a little exercise to create a Person class with name, dob - and then we TDDâd an age methodâ¦ which seems simple on the surface but it gets to an interesting point - what about leap years? How old is someone on those years? >> I thought that our plethora of Date/Duration classes might handle this - but I couldnât spot something obvious and was wondering if someone had a neat answer. >> Essentially if you try: >> age >> ^Date today - self dob >> You get a Duration, >> But there isnât : >> ^(Date today - self dob) asYears >> There is is asDay >> ^(Date today - self dob) asDays >> But then can you really >> ^(Date today - self dob) asDays / 365) truncated >> But what about leap yearsâ¦ so >> ^(Date today - self dob) asDays / 365.25) truncated >> It all feels a bit inelegant and I suspect there is a better Smalltalk way that is eluding me? Any suggestions? >> Tim > >

July 21, 2017

Re: [Pharo-users] How to calculate someone's age elegantly? Does Duration work?

by K K Subbu

Date>>ageOn: aDate " assert: (self <= aDate) | age | age = aDate year - self year + 1. aDate monthIndex < self monthIndex ifTrue: [ ^age - 1 ]. (aDate monthIndex = self monthIndex and: [aDate dayOfMonth < self dayOfMonth]) ifTrue: [ ^age - 1 ]. ^age HTH .. Subbu On Friday 21 July 2017 05:28 AM, Tim Mackinnon wrote: > Hi - I just ran a great MobProgramming session with Smalltalk for the XProLo group - and there was lots of great feedback and questions, however one of them really got me thinkingâ¦ > > We did a little exercise to create a Person class with name, dob - and then we TDDâd an age methodâ¦ which seems simple on the surface but it gets to an interesting point - what about leap years? How old is someone on those years? > > I thought that our plethora of Date/Duration classes might handle this - but I couldnât spot something obvious and was wondering if someone had a neat answer. > > Essentially if you try: > > age > > ^Date today - self dob > > You get a Duration, > > But there isnât : > > ^(Date today - self dob) asYears > > There is is asDay > > ^(Date today - self dob) asDays > > But then can you really > > ^(Date today - self dob) asDays / 365) truncated > > But what about leap yearsâ¦ so > > ^(Date today - self dob) asDays / 365.25) truncated > > > It all feels a bit inelegant and I suspect there is a better Smalltalk way that is eluding me? Any suggestions? > > Tim >

July 21, 2017

Re: [Pharo-users] How to calculate someone's age elegantly? Does Duration work?

by Tim Mackinnon

Hmmm to compound my woes ) I notice that Timespan is broken - as the following fails: testEndDateIsPreserved | startDate endDate | startDate := Date year: 2000 month: 2 day: 28. endDate := Date year: 2011 month: 2 day: 27. self assert: (Timespan starting: startDate ending: endDate) end equals: endDate. > On 21 Jul 2017, at 00:58, Tim Mackinnon <tim(a)testit.works> wrote: > > Hi - I just ran a great MobProgramming session with Smalltalk for the XProLo group - and there was lots of great feedback and questions, however one of them really got me thinkingâ¦ > > We did a little exercise to create a Person class with name, dob - and then we TDDâd an age methodâ¦ which seems simple on the surface but it gets to an interesting point - what about leap years? How old is someone on those years? > > I thought that our plethora of Date/Duration classes might handle this - but I couldnât spot something obvious and was wondering if someone had a neat answer. > > Essentially if you try: > > age > > ^Date today - self dob > > You get a Duration, > > But there isnât : > > ^(Date today - self dob) asYears > > There is is asDay > > ^(Date today - self dob) asDays > > But then can you really > > ^(Date today - self dob) asDays / 365) truncated > > But what about leap yearsâ¦ so > > ^(Date today - self dob) asDays / 365.25) truncated > > > It all feels a bit inelegant and I suspect there is a better Smalltalk way that is eluding me? Any suggestions? > > Tim

July 21, 2017

How to calculate someone's age elegantly? Does Duration work?

by Tim Mackinnon

Hi - I just ran a great MobProgramming session with Smalltalk for the XProLo group - and there was lots of great feedback and questions, however one of them really got me thinkingâ¦ We did a little exercise to create a Person class with name, dob - and then we TDDâd an age methodâ¦ which seems simple on the surface but it gets to an interesting point - what about leap years? How old is someone on those years? I thought that our plethora of Date/Duration classes might handle this - but I couldnât spot something obvious and was wondering if someone had a neat answer. Essentially if you try: age ^Date today - self dob You get a Duration, But there isnât : ^(Date today - self dob) asYears There is is asDay ^(Date today - self dob) asDays But then can you really ^(Date today - self dob) asDays / 365) truncated But what about leap yearsâ¦ so ^(Date today - self dob) asDays / 365.25) truncated It all feels a bit inelegant and I suspect there is a better Smalltalk way that is eluding me? Any suggestions? Tim

July 20, 2017

Re: [Pharo-users] Zinc newbie question: How to get file metadata from Dropbox

by jb

Sven Van Caekenberghe-2 wrote >> On 20 Jul 2017, at 19:57, Johannes Brauer < > brauer@ > > wrote: >> >> Hi! >> >> To download a file from Dropbox is easy: >> >> ZnClient new >> https; host: 'content.dropboxapi.com'; >> addPath: '2'; addPath: 'files'; addPath: 'download'; >> headerAt: 'Authorization' put: >> 'Bearer > <my generated access token> > '; >> headerAt: 'Dropbox-API-Arg' put: '{"path": "/demo.txt"}' ;get. >> >> But I cannot figure out how to get file metadata >> (https://www.dropbox.com/developers/documentation/http/documentation#files-g…) >> >> If I try the following >> >> (ZnClient new >> https; host: 'api.dropboxapi.com'; >> addPath: '2'; addPath: 'files'; addPath: 'get_metadata'; >> headerAt: 'Authorization' put: >> 'Bearer >> QfCCKhxI-HwAAAAAAAAGdeT916yqY4tkX3EN6EW2S3EMxYyv5Xky9LeCxuGi8_o7'; >> headerAt: 'Content-Type' put: 'application/json'; >> formAt: 'path' put: 'demo.txt'; post). >> >> I get the error message from Dropbox: >> >> Error in call to API function "files/get_metadata": Bad HTTP >> "Content-Type" header: "application/x-www-form-urlencoded". Expecting >> one of "application/json", "application/json; charset=utf-8", >> "text/plain; charset=dropbox-cors-hack". > > By using #formAt:put: you implicitly create a > ZnApplicationFormUrlEncodedEntity instance, this is not what you > want/need. This would POST proper JSON: > > ZnClient new > https; host: 'api.dropboxapi.com'; > addPath: '2'; addPath: 'files'; addPath: 'get_metadata'; > headerAt: 'Authorization' put: 'Bearer > QfCCKhxI-HwAAAAAAAAGdeT916yqY4tkX3EN6EW2S3EMxYyv5Xky9LeCxuGi8_o7'; > entity: (ZnEntity with: (STONJSON toString: { #path->'demo.txt' } > asDictionary) type: ZnMimeType applicationJson); > post. > > Does that work ? yes, it does thanks a lot -- View this message in context: http://forum.world.st/Zinc-newbie-question-How-to-get-file-metadata-from-Dr… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

July 20, 2017