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IBM PC-compatible BIOSes use magic values 0000 and 1234 to decide if the system should count up memory or not on reboot, thereby performing a cold or a warm boot. Theses values are also used by EMM386 memory managers intercepting boot requests. [13] BIOSes also use magic values 55 AA to determine if a disk is bootable. [14]
Proof. We need to prove that if you add a burst of length to a codeword (i.e. to a polynomial that is divisible by ()), then the result is not going to be a codeword (i.e. the corresponding polynomial is not divisible by ()).
Here "mydirectory" must be a directory which exists and which can be written to in order to store the database files. The startup creates some files in "mydirectory".
A Universally Unique Identifier (UUID) is a 128-bit label used to uniquely identify objects in computer systems. The term Globally Unique Identifier (GUID) is also used, mostly in Microsoft systems. [1] [2] When generated according to the standard methods, UUIDs are, for practical purposes, unique.
In all versions of Python, boolean operators treat zero values or empty values such as "", 0, None, 0.0, [], and {} as false, while in general treating non-empty, non-zero values as true. The boolean values True and False were added to the language in Python 2.2.1 as constants (subclassed from 1 and 0 ) and were changed to be full blown ...
Classes can define how their instances are treated in a Boolean context through the special method __nonzero__ (Python 2) or __bool__ (Python 3). For containers, __len__ (the special method for determining the length of containers) is used if the explicit Boolean conversion method is not defined.
In a normal floating-point value, there are no leading zeros in the significand (also commonly called mantissa); rather, leading zeros are removed by adjusting the exponent (for example, the number 0.0123 would be written as 1.23 × 10 −2). Conversely, a denormalized floating-point value has a significand with a leading digit of zero.
Note that our canonical Huffman tree always has higher values for longer bit lengths and that any symbols of the same bit length (C and D) have higher code values for higher symbols: A = 10 (code value: 2 decimal, bits: 2 ) B = 0 (code value: 0 decimal, bits: 1 ) C = 110 (code value: 6 decimal, bits: 3 ) D = 111 (code value: 7 decimal, bits: 3 )