Returns true if the provided value is a string representing an absolute URL, else returns false.
Returns true if the provided value is a string representing an absolute URL, else returns false.
Returns true if the provided value is a boolean, else returns false.
Returns true if the provided value is a boolean, else returns false.
Returns true if the provided value is a string containing non-whitespace characters, else returns false.
Returns true if the provided value is a string containing non-whitespace characters, else returns false.
Returns true if the provided value is a string representing a currency amount, else returns false.
Returns true if the provided value is a string representing a currency amount, else returns false.
Returns true if the provided value is a string representing a currency code, else returns false.
Returns true if the provided value is a string representing a currency code, else returns false.
Returns true if the provided value is a string containing only the digits 0-9, else returns false.
Returns true if the provided value is a string containing only the digits 0-9, else returns false.
Returns true if the email address is valid, based on RFC 2822. Email addresses containing quotation marks or square brackets are considered invalid, as this syntax is not commonly supported in practise. The domain of the email address is not checked for validity.
Returns true if the email address is valid, based on RFC 2822. Email addresses containing quotation marks or square brackets are considered invalid, as this syntax is not commonly supported in practise. The domain of the email address is not checked for validity.
Returns true if the provided value is an integer, else returns false.
Returns true if the provided value is an integer, else returns false.
Returns true if the provided value is a string representing an ISO8601 datetime, else returns false.
Returns true if the provided value is a string representing an ISO8601 datetime, else returns false.
(length-equal-to? length)
Returns a function that returns true if the provided value has the specified length, else returns false.
Returns a function that returns true if the provided value has the specified length, else returns false.
(length-greater-than? length)
Returns a function that returns true if the provided value has a length greater than the specified length, else returns false.
Returns a function that returns true if the provided value has a length greater than the specified length, else returns false.
(length-less-than? length)
Returns a function that returns true if the provided value has a length less than the specified length, else returns false.
Returns a function that returns true if the provided value has a length less than the specified length, else returns false.
Returns true if the provided value is a positive number or a string representing a positive number, else returns false.
Returns true if the provided value is a positive number or a string representing a positive number, else returns false.
Returns true if the provided value has a count of at least 1, else returns false.
Returns true if the provided value has a count of at least 1, else returns false.
Returns true if the provided value is a string representing a phone number,
else returns false. By default, treats phone numbers as being from
Great Britain, however the default region can be overridden with
*default-phone-number-region-code*
.
Returns true if the provided value is a string representing a phone number, else returns false. By default, treats phone numbers as being from Great Britain, however the default region can be overridden with `*default-phone-number-region-code*`.
Returns true if the provided value is a positive number or a string representing a positive number, else returns false.
Returns true if the provided value is a positive number or a string representing a positive number, else returns false.
Returns true if the provided value is a string representing a UK postcode, else returns false.
Returns true if the provided value is a string representing a UK postcode, else returns false.
Returns true if the provided value is a string, else returns false.
Returns true if the provided value is a string, else returns false.
Returns true if the provided value is a string representing a v4 UUID, else returns false.
Returns true if the provided value is a string representing a v4 UUID, else returns false.
Returns true if the provided value is zero or a string representing zero, else returns false.
Returns true if the provided value is zero or a string representing zero, else returns false.
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