0b0000

0b0000 is a binary literal that represents a four-bit pattern consisting of zeros. The prefix 0b indicates that the digits that follow are written in base 2. The digits 0000 together represent the value zero; in decimal this is 0, and it is also equivalent to zero in other common bases.

In programming, 0b0000 is often used to specify bit patterns for masks, flags, or initial states. The presence of four digits can imply a nibble-sized width, which can be relevant in low-level code, hardware description, or contexts where fixed bit-length representations are important. However, the underlying numeric value remains zero regardless of leading zeros; many languages allow omitting leading zeros without changing the value.

The 0b prefix is a recognized convention in several contemporary programming languages for binary literals. Languages that support this syntax include Python, JavaScript (ES6 and later), Java, C++, and others. In practice, 0b0000 is typically interchangeable with the simple value 0, though the explicit binary form can aid readability when illustrating bitwise operations or hardware-oriented concepts.

Related concepts include 0x for hexadecimal literals and 0b for binary literals in general. In digital and computing contexts, a four-bit zero pattern like 0b0000 commonly signifies an all-clear state or a zeroed bitfield.

Notes: the exact availability and syntax of binary literals with the 0b prefix can vary by language and version, so it is advisable to consult language-specific documentation for precise rules.