Table 7-1 summarizes each of the dictionary classes and how they differ in these
respects. The performance times are in milliseconds, to perform 50,000 operations
on a dictionary with integer keys and values, on a 1.5 GHz PC. (The differences in
performance between generic and nongeneric counterparts using the same underlying
collection structure are due to boxing, and show up only with value-type
elements.)
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