0b1010

0b1010 is a binary literal used in many programming languages to denote the binary number 1010. The prefix 0b signals base 2, and the following digits are read as bits. The value of this literal is decimal 10, and in hexadecimal it corresponds to 0xA.

In binary, the four-bit pattern 1010 represents the decimal value ten. As a digital representation, it is often used in contexts involving bitwise operations, bit masks, and flags, where specific bit patterns encode states or options. Some languages allow formatting aids, such as underscores to improve readability (for example, 0b10_10).

Language support varies. In Python, JavaScript (ES6 and later), Java (since Java 7), and C++ (since C++14), 0b-prefixed literals are standard features. In C and earlier C++ standards, 0b literals are not part of the language specification, though some compilers may provide extensions.

Overall, 0b1010 serves as a concise way to express a binary constant, making it convenient for low-level programming tasks that involve direct manipulation of bits, such as setting or testing specific flags within an integer.