Language - Value

Card Puncher Data Processing

About

Logical Data Modeling - Value (Operand) in code

In a dynamic language, only the value has a type (not the variable)

Every value has a type.

Variable are a component to manage state.

Type

Literal

Values that are included directly in the source code are called literals.

Expression

Language - Expression

Object value by Reference

Object value are held by reference (ie the address of the value). Two objects are the same if they have the same address value.

The equality function/operator for an object may be also define to change this behavior.





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Card Puncher Data Processing
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This section regroups the entity of a computer language from a lexical point of view. It's the same as Parts of the speech for a natural language. Grammars are useful models when designing software...
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Weak typing, also known as dynamic typing, allows a variable to hold any type of value at any time. Ie a variable is just a data container without type. The type is only on the value. Dynamic typing,...
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A entity: have a name have a scope is created by a declaration statement is stored in a variable have a value The scope and name of the entity are theidentity of the entity. See See also:...
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Language - (Variable | Field)

Variables in a computer language are used to store data information. A variable is a piece of storage containing a value. Variables created by declarations are identified: by a name, such as x, ...



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