is_var : term -> bool
- SYNOPSIS
-
Tests a term to see if it is a variable.
- DESCRIBE
-
If M is a HOL variable, then is_var M returns true. If the term is not a variable the result is false.
- FAILURE
-
Never fails.
- SEEALSO mk_var,
dest_var,
is_const,
is_comb,
is_abs
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