And where C++ and Java fields can be optimized right into the object’s structure, Ruby instance variables have typically been implemented as a hash table that can grow and adapt to a running ...

Seventy years after the invention of a data structure called a hash table, theoreticians have found the most efficient possible configuration for it.

Kuszmaul had a different reaction. “You didn’t just come up with a cool hash table,” he remembers telling Krapivin. “You’ve actually completely wiped out a 40-year-old conjecture!” Without setting out ...

Making fast hash tables in programming, which don't cause collision trouble, is one of computing's holy grails. Facebook thinks it's created a good one.