dangrous true?

[ssqq]

if you use true? as checking function for list, be attention to: blank list -> '(), would not match it.

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> (true? '())
nil



If you often use it, advise you use :

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> (define (bool x) (if (nil? x) nil true))
> (for-all bool '(1 2 3 4 () 6))


[rickyboy]

if you use true? as checking function for list, be attention to: blank list -> '(), would not match it.

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> (true? '())
nil


`true?` works as advertised.



http://www.newlisp.org/downloads/newlisp_manual.html#truep">http://www.newlisp.org/downloads/newlis ... html#truep">http://www.newlisp.org/downloads/newlisp_manual.html#truep



I don't see any problem with it, and so I don't consider it "dangerous".