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Jeff Gray

and: help

I have a line of code that goes:
([self directoryName = ''] and: [self fileSpec = '']) ifTrue: [.....

and it throws an error "NonBooleanReceiver: proceed for truth".
The directoryName and fileSpec methods both ititialise to '' (empty string) if nil.

I couldn't see what the issue was so I played in a workspace and evaluated:
[true] and: [true]
which gave me the same error.

I'm in Pharo 1.1.1
Is my boolean structure wrong or is this a bug? Is there a better way for me to write the code?

Benoit St-Jean

Re: and: help

((self directoryName = '') and: [self fileSpec = '']) ifTrue: [something]

Note the receiver of #and: is NOT a block

-----------------
Benoit St-Jean
Yahoo! Messenger: bstjean
A standpoint is an intellectual horizon of radius zero.
(Albert Einstein)

From: Jeff Gray <[hidden email]>
To: [hidden email]
Sent: Mon, March 28, 2011 10:23:03 PM
Subject: [Pharo-users] and: help

I have a line of code that goes:
([self directoryName = ''] and: [self fileSpec = '']) ifTrue: [.....

and it throws an error "NonBooleanReceiver: proceed for truth".
The directoryName and fileSpec methods both ititialise to '' (empty string)
if nil.

I couldn't see what the issue was so I played in a workspace and evaluated:
[true] and: [true]
which gave me the same error.

I'm in Pharo 1.1.1
Is my boolean structure wrong or is this a bug? Is there a better way for me
to write the code?

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View this message in context: http://forum.world.st/and-help-tp3413554p3413554.html
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Jeff Gray

Re: and: help

Excellent. Thanks Benoit. I think my sense of symmetry overtook my sense of Smalltalk :-)