Isvalid Packages

Test if a value is a centrosymmetric matrix.

Test if a value is a class.

Test if a value is a 64-bit or 128-bit complex number.

Test if a value is a complex number-like object.

Test if a value is complex-typed-array-like.

Test if a value is an array-like object where every element is between two values.

Test if a value is a BigInt.

Test if a value is a BigInt64Array.

Test if a value is a BigUint64Array.

Test if a value is a binary string.

Test if a value is a binary string.

Test if a value is a blank string.

Test if a value is a blank string.

Test if a value is a BooleanArray.

Test if a value is a DataView.

Test if a value is a Date object.

Test if a value is an array-like object containing only Date objects.

Test whether a string contains only numeric digits.

Test whether a string contains only numeric digits.

Test if a value is a domain name.