A J Martin napsal(a):
>Ladislav wrote:
>
>
>>my slide-show can be run in View/beta as follows:
>>
>>do http://www.fm.vslib.cz/~ladislav/rebol/present.r
>>
>>
>
>
>
>
>>>do http://www.fm.vslib.cz/~ladislav/rebol/present.r
>>>
>>>
>** Script Error: unless has no value
>** Where: tfunc
>** Near: unless string? pick spec 1
>
>:(
>
>
>
Hi Andrew,
you can define Unless as follows:
unless: func [
"Evaluates the block if condition is not TRUE."
[throw]
condition
block [block!]
] [
either condition [none] block
]
, but I am not sure that is everything what is needed to run the script
-L
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