ЭЛЕКТРОННАЯ БИБЛИОТЕКА КОАПП |
Сборники Художественной, Технической, Справочной, Английской, Нормативной, Исторической, и др. литературы. |
2. Scalar DataContents: 2.1 What Is Scalar Data?A scalar is the simplest kind of data that Perl manipulates. A scalar is either a number (like 4 or 3.25e20) or a string of characters (like A scalar value can be acted upon with operators (like plus or concatenate), generally yielding a scalar result. A scalar value can be stored into a scalar variable. Scalars can be read from files and devices and written out as well. |