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(absent? rules value)
Method that is used to determine if the value is absent in some way. Rules should be a set. The possible values of the set are: * :nil - return true if the value is nil * :blank - return true if the value is an empty string * :missing - return true if the value is :arianna/missing The last, :missing checks for the special value :arianna/missing returned by as-key when it fails to find the key.
(contains-in? coll key)
The equivalent of contains? for vectors. The counterpart of get-in and get. Normally you won't want to call it directly, but v/has uses it.
(in-range? min-incl max-excl value)
Method that checks if its value is numeric and is between min, inclusive, and max, exclusive.
Transform method that tries to convert s to a number. Returns nil on failure.
Reads a number from a string. Returns nil if not a number.
(regex-match? regex v)
Returns true if the string v matches the given regular expression.