what default value assigned to boolean variable

#一, PHP variable definition: Variables are used to store values, such as numbers, text strings or arrays, V: string/integer/double/array/object Naming rules: 1. The variable name of PHP is case-sensitive. 2. The variable name must begin with $3,

The Java language requires that variables follow the rules that are first defined, then initialized, and then used. The initialization of a variable is the first time it is assigned an initial value since the definition of the variable.First, member

Boolean is a type of PL/SQL data. Logical values are true and false. Only logical operators can be applied to boolean variables. The Database SQL type does not support BooleanType. Only PL/SQL is supported. Therefore, you cannot insert or retrieve

3.4 Boolean TypeIn our daily life, we need to use a variable of type int to represent bus 216; A variable of type float is required to represent 3.5 yuan a pound of tomato, and sometimes it needs to represent a data, which is the logical state:"Have

3.4 Boolean TypeIn our daily life, we need to use a variable of type int to represent bus 216; A variable of type float is required to represent 3.5 yuan a pound of tomato, and sometimes it needs to represent a data, which is the logical state:"Have

Instance variable: An instance variable is declared in a class, but outside of the method, a constructor or any block. When space is allocated to an object in the heap, the slots create values for each instance variable. When an object is

Basic data typesA variable is a memory location that is reserved for storing values. This means that when you create a variable, it takes up a certain amount of space in memory. Based on the variable data type, the operating system allocates memory

Value type In the previous chapter we learned a simple C # program, the main composition of the following we have to learn the basic C # fundamental syntax, the first learning is the data type of value types and reference types, as well as constant

C # data type, default value, New Keyword, formatted value result table Data Type Overview The data type can be described as follows: Built-in data types, such as Int or char, User-Defined data types, such as class or interface. The data type

JavaScript learning"Arrays in JS"1, the concept of arrays: The order in which the elements of the structure of an ordered element are sequentially stored in memory is called subscript, and the object element is looked up by subscript.2, the