(email? x)
Returns true if the given string is a valid email
Returns true if the given string is a valid email
(empty? x)
Returns true if the given value is null or an empty string
Returns true if the given value is null or an empty string
(is-url? x)
Returns true if the given string is a url
Returns true if the given string is a url
(not-neg-number? x)
Returns true if the given value is a number and it is positive or 0
Returns true if the given value is a number and it is positive or 0
(pos? x)
Returns true if the given value is a number is greater than zero. Overriding clojure.core/pos? because it doesn't handle well not-number types. Returns false otherwise
Returns true if the given value is a number is greater than zero. Overriding clojure.core/pos? because it doesn't handle well not-number types. Returns false otherwise
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