Re: something like perl's 'require 5.4'

[thompson(at)orpheus.nascom.nasa.gov (William Thompson)]

Craig Markwardt <craigmnet@cow.physics.wisc.edu> writes:


>Vapuser <vapuser@catspaw.jpl.nasa.gov> writes:
>>   How about:
>> 
>>   version=strupcase(strjoin(strsplit(!version.release,'[.-_]',/extract),""))
>>   input_version=strupcase(strjoin(strsplit(desired_release,'[.-_]',/extract),""))
>>   if version lt input_version then 'eeek'
>> 
>>   Clearly `desired_release' would have to be input as a string.
>> 
>>   Of couse, this method 'requires' IDL 5.3 (IIRC), to get the regular
>>   expression semantics of strsplit. The other question is will RSI use
>>   any separator in version designations besides these three?


>Umm, I never thought I'd be saying this, but aren't these a bit
>overengineered?  I have found that in 95% of the cases the DOUBLE
>compare will work, and in 4% of the cases the STRING compare will
>work.  

I've always found that a simple string comparison works in 100% of the cases.
Where doesn't it work?

Bill Thompson