Am 03.01.18 um 14:07 schrieb Julien:
> Hello,
>
> I do not see how to do a formatted print from a duration.
>
> I would like to be able to do something like:
>
> String streamContents: [ :s | 90 minutes formatted: ‘hh:mm’ printOn: s ]
>
> The Duration>>#printOn: method prints the ANSI 5.8.2.16 format:
> [-]D:HH:MM:SS[.S]
>
> The Duration>>#printHumanReadableOn: is not printing in the format I want.
>
> Am I missing something or such feature does not exist actually?
Hi Julien
I did not find a ready made method for that, either. Probably because
there is no standard way to print a *Duration* as minutes and seconds,
because it is not obvious how to print it (Compared to instances of the
*Time* class).
My solution would be to implement your own printing method using the
GRPrinter from the Grease package (Installable through Catalog Browser
in Pharo 6):
*****************************
| hoursPrinter minutesPrinter printer |
"Note: you can not use 'duration minutes', since this will give you only
the partial minutes inside a day"
hoursPrinter := GRMappedPrinter
block: [ :duration | duration asMinutes // 60 ]
next: (GRNumberPrinter new).
minutesPrinter := GRMappedPrinter
block: [ :duration | duration minutes ]
next: (GRPrinter numberWithAtLeastDigits: 2).
printer := hoursPrinter, $:, minutesPrinter.
^printer print: (9876 minutes) "Will result in '164:36'"
*****************************
2. solution: Or just dead simple:
*****************************
| duration |
duration := (9876 minutes).
^(duration asMinutes // 60) asString, ':',
duration minutes asTwoCharacterString
*****************************
Cheers, Andreas
--
Andreas Brodbeck
www.mindclue.ch
