[Micro tip] Compass

If you need to test the compass, a small hack can be used.

Because the empty string cannot be tested, the following equation will not work:

$#CMPS#==?It does not work.:It works.$

However, it is possible to use automatic joining of text strings. Just add a letter to the text you need to test for a “null” value.

$#CMPS#a==a?It does not work.:It works.$

I hope this helps someone.



Wow, neat trick - thanks for sharing!

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