Count how many times b occurs:

Count powers of x in an Association:

Count powers of x on all levels:

Count symbols:

Count works with patterns:

Count the number of elements not matching b:

Count occurrences of b down to level 2:

Count occurrences at level 2 only:

Count all numeric expressions appearing as part of a larger expression:

A numeric level specification does not include level zero:

Use a two-element list to explicitly include level zero:

Count works with any head, not just List:

Count the total number of symbols in an expression:

Count the total number of elements greater than 0.5:

Count the number of rows whose first element is 1:

Count returns the length of the result given by Cases:

Count returns the length of the result given by Position:

A count at level {0} is effectively a numericized version of MatchQ:

For most expressions, LeafCount equals the count matching Blank[] at level {-1}:

Count treats Rational and Complex as atoms:

LeafCount counts Rational and Complex numbers using their FullForm:

Compute Count in parallel:

Count looks for matches based on patterns, which may not be the same as numerical equality:

Write a pattern using Condition to force searching based on numerical equality: