Converts bytes into a string

Returns a set of characters defined as a collection of collections with start and stop character, e.g.: \A \Z

Generates the given number of random digits and converts all into a single string. When the second argument is present it should be an instance of random number generator used to get the digits.

Like rand-int but optionally uses random number generator.

Returns a random element of the given vector. When the second argument is present it should be an instance of random number generator used to get the random position.

Just like the contains? but if the keyword is namespace-qualified it also checks if the collection contains the same keyword as its key but without a namespace.

Just like the get function but if the keyword is namespace-qualified it first attempts to look for the value associated with it. If that fails it uses the variant of the keyword without any namespace.

Like juxt but returns a lazy sequence.

Returns a lazy sequence as an interface to the given iterable Java object.

Takes a string of namespace name and a keyword. If the given keyword is not namespace-qualified it returns a new keyword with the given namespace added. If the given keyword is already equipped with a namespace it returns it.

For 0 or 1 it returns its argument. For other positive numbers it returns a random natural number from 1 to this number (inclusive) in 50% cases. In other 50% cases it returns its argument.

Evaluates body and if NullPointerException exception is caught it returns nil. Otherwise it returns the value of last expression in the body.

Returns integer from an object or nil if the given object does not contain valid integer.

Returns long from an object or nil if the given object does not contain valid long.

Evaluates body when the given value is a non-empty collection.

Returns the collection if it’s not empty. Otherwise returns nil.