Re: [Pharo-dev] Object>>ifNilOrEmpty: aBlock

You summarise well the kind of code I do not like. isNil everywhere and horrible tests. Stef Le 4/1/15 23:27, Sebastian Sastre a écrit :

Hi guys,

I’ve started to use this little one:

Object>>ifNilOrEmpty: aBlock

self ifNil: [ ^ aBlock value ].

(self isCollection and: [ self isEmpty ]) ifTrue: [ ^ aBlock value ].

^ self.

It allows you to do the widely known JavaScript one-liner:

var stuff = this.thing || ‘some default value for when this.thing is undefined, null or an empty string’.

but in smalltalk in this way:

stuff := self thing ifNilOrEmpty: [ ‘some default value for when self thing is nil or an empty string’ ]

simple thing feels practical and nice :)