On Mon, 15 Mar 2010, nullPointer wrote:
Well, perhaps is a theme worked in another times but... is possible for Pharo have a basic Case or elseIf statement? I know is easy create you own structure control, but not is more useful have a "standard" for everybody? I´m tired of write code like that... (self currentRow == sortedRows last and: [ self currentCell isNil ]) ifTrue: [ self navigationKey: event ] ifFalse: [ (self currentRow notNil and: [ self currentCell isNil ]) ifTrue: [ self setCurrentRowToNext. ] ifFalse: [ (self currentRow notNil and: [ self currentCell notNil ]) ifTrue: [ self setCurrentCellToNext. self currentCell notNil ifTrue: [ self currentCell performKeyFocus: event inCellBounds: (self pvtGetCellBounds: self currentCell). ]. ]. ]. ]. You can save 2-3 lines/branch if you format your code with a better style: foo ifTrue: [ ... ] ifFalse: [ bar ifTrue: [ ... ] ifFalse: [ baz ... ] ] If you make this branch a separate method you can use returns making it even simpler: foo ifTrue: [ ^... ] bar ifTrue: [ ^... ] baz ifTrue: [ ^... ] ... And there's #caseOf:otherwise: for a case-like pseudostatemet. Note that this is inlined by the compiler. foobar caseOf: { [ ... ] -> [ ... ]. [ ... ] -> [ ... ]. ... } otherwise: [ ... ]
Write code with that format is pathetical :(
Is valid too have a "and" and "or" lazy? Exists a not lazy with #& and #| , but could exists an #&& and #|| . Is more easy... value1 == value2 and:[ <condition> ] and: [<condition>] ...... or value1 == value2 && <condition> && <condition> ......... ??? #and: and #or: is short-circuit (lazy) by default.
Well, perhaps is a stupid question but I miss a more complete way for write code. If in Smalltalk is possible do easy that and include it in "core" why not do it?
Soon I'll start collecting credits for promoting this book: http://stephane.ducasse.free.fr/FreeBooks/WithStyle/SmalltalkWithStyle.pdf :) Levente Is a reasonable desire :) Regards -- View this message in context: http://n4.nabble.com/Case-statement-and-lazy-comparison-in-Pharo-tp1594080p1... Sent from the Pharo Smalltalk mailing list archive at Nabble.com. _______________________________________________ Pharo-project mailing list Pharo-project@lists.gforge.inria.fr http://lists.gforge.inria.fr/cgi-bin/mailman/listinfo/pharo-project