Vomiting (throwing up) and diarrhea (watery stools or poop!) are often caused by a virus (a kind of germ). Although there is no medicine to cure these infections, your childâs body will get rid of the virus in a week or 10 days.
Boolean expression-Computer Definition. A statement using Boolean operators that expresses a condition that is either true or false. See Boolean search. 1  Link/Cite. 2  Home. 3  Dictionary Definitions.
An expression in programming is any combination of values, variables and operators that produce a new value. For example, 2 + 3 is an expression, and the result is the new value 5. When you use a Boolean expression, the only logical result can be true or false.n addition to Boolean data, there are Boolean operators, which are used to carry out Boolean algebra. There are three main Boolean operators: AND, OR and NOT. The first two are used to combine two expressions; the third is used as a negation operator. Let's look at each of these in more detail.