Null function

（重定向自Null operator）

In computer science, a null function (or null operator) is subroutine that returns no data values and leaves the program state unchanged. When it is part of the instruction set of a processor, it is called a NOP or NOOP (No OPeration).

Mathematically, a (computer) function f is null if and only if its execution leaves the program state s unchanged. That is, a null function is an identity function whose domain and codomain are both the state space S of the program, and for which:

单词	Null operator
释义	Null operator 英语百科 Null function （重定向自Null operator） In computer science, a null function (or null operator) is subroutine that returns no data values and leaves the program state unchanged. When it is part of the instruction set of a processor, it is called a NOP or NOOP (No OPeration). Mathematically, a (computer) function f is null if and only if its execution leaves the program state s unchanged. That is, a null function is an identity function whose domain and codomain are both the state space S of the program, and for which:
随便看	i declare的意思 IDE controller的意思 IDECS的意思 id的意思 idee的意思 Idee Fixe的意思 ideefixe的意思 ideerecue的意思 ide的意思 idees fixes的意思 idees recues的意思 IDEF的意思 Ideford的意思 i defy you的意思 Idegem的意思 Idegesi的意思 idegraph的意思 IDE hard disk的意思 IDE hard drive的意思 IDE HDD的意思 Idehen的意思 idei的意思 IDEIA的意思 IDE interface的意思 IDeist的意思