[squeak-dev] The Inbox: Chronology-Core-ul.22.mcz

Levente Uzonyi leves at caesar.elte.hu
Tue Jan 15 21:42:42 UTC 2019

Hi Eliot,

On Mon, 14 Jan 2019, Eliot Miranda wrote:

> Hi Levente,
>>  = aDateAndTimeOrTimeStamp
>>      "Equal if the absolute time values match, regardless of local time transform"
>> +
>>      self == aDateAndTimeOrTimeStamp ifTrue: [ ^ true ].
>> +    aDateAndTimeOrTimeStamp species == DateAndTime ifFalse: [ ^false ].
>> +    aDateAndTimeOrTimeStamp utcMicroseconds = utcMicroseconds ifTrue: [ ^true ].
>> +    ^false!
>> -    ^aDateAndTimeOrTimeStamp species == DateAndTime
>> -        and: [ utcMicroseconds = aDateAndTimeOrTimeStamp utcMicroseconds ]!
> Can we please avoid the ... ifFalse: [^false] style and keep the much nicer concise and: style?  Yes, the former is slightly faster, but not by much, and the JIT has code to minimize the difference and Sista will eliminate the difference.  The former style is so ugly.

I personally prefer early returns because I find them much more readable:
for every boolean term I can tell exactly how it will affect the return 
value of the method, while that is a lot harder with a single boolean 
I agree that the last two returns could be simplified into a single 
return but I see no problem with the rest.


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