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Errata - table 3.12 Merge and compute methods when nulls are involved

 
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Hello,

in table 3.12 1st row - key has null value and mapping function returns null - merge function will associate new value with that key (mapping function isn't even called), won't remove it. Right?
 
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Robert,
Welcome to CodeRanch!

Thanks for reporting this. You are correct. Have a cow for reporting something detailed that was an incorrect fact and not just a typo! (We still like to hear about typos, but incorrect facts are more important!) I've added this to the errata
 
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