class Gem::Exception: Base exception class for RubyGems. All exception raised by RubyGems are a subclass of this one.

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The set() method of Map instances adds a new entry with a specified key and value to this Map, or updates an existing entry if the key already exists.

The entries() method of Map instances returns a new map iterator object that contains the [key, value] pairs for each element in this map in insertion order.

The length data property of an Array instance represents the number of slots in that array. The value is an unsigned, 32-bit integer that is always numerically greater than the highest index in the array. It may be greater than the number of elements if the array is sparse.

The toLocaleDateString() method of Date instances returns a string with a language-sensitive representation of the date portion of this date in the local timezone. In implementations with Intl.DateTimeFormat API support, this method delegates to Intl.DateTimeFormat.

The FinalizationRegistry() constructor creates FinalizationRegistry objects.

The length accessor property of TypedArray instances returns the length (in elements) of this typed array.

The toLocaleString() method of TypedArray instances returns a string representing the elements of the typed array. The elements are converted to strings using their toLocaleString methods and these strings are separated by a locale-specific string (such as a comma ","). This method has the same algorithm as Array.prototype.toLocaleString().

The with() method of TypedArray instances is the copying version of using the bracket notation to change the value of a given index. It returns a new typed array with the element at the given index replaced with the given value. This method has the same algorithm as Array.prototype.with().