TComponentName = type string;

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savyhinst © (2008-07-16 17:43) [0]

Здраствуйте.
Подскажите пожалуйста, что значит конструкция
TComponentName = type string;
,Что было найдено мною в Classes.pas
,и чем она отличается от
TComponentName = string
Спасибо за внимание.

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tesseract © (2008-07-16 17:51) [1]

Справочник даже открыть лень ?

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savyhinst © (2008-07-16 17:52) [2]

Какой справочник? я впервые в жызни такое вижу

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Palladin © (2008-07-16 18:04) [3]

который по F1 находится

> savyhinst © (16.07.08 17:43)

When you declare a type that is identical to an existing type, the compiler treats the new type identifier as an alias for the old one. Thus, given the declarations type TValue = Real; var X: Real; Y: TValue; X and Y are of the same type; at runtime, there is no way to distinguish TValue from Real. This is usually of little consequence, but if your purpose in defining a new type is to utilize runtime type information--for example, to associate a property editor with properties of a particular type--the distinction between "different name" and "different type" becomes important. In this case, use the syntax type newTypeName = type type For example, type TValue = type Real; forces the compiler to create a new, distinct type called TValue.

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