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Pascal / Types

variant records

Learn variant records in Pascal with a construct-specific explanation, unique example, engineering boundary, and mastery check.

10 min read • Beginner

variant records is a focused Pascal topic inside Types. This lesson explains the construct itself, the state or value it operates on, and the observable result it produces.

Read the example as a small executable experiment. Identify the exact syntax that belongs to variant records, then change one input and predict the result before running it.

Topic-specific example

pascal-02-10-variant-records.pas
pascal Try It Live 
type TValueKind=(vkInt,vkText); TValue=record case Kind:TValueKind of vkInt:(I:Integer); vkText:(S:string[20]); end;
Edge case / engineering note

variant records has rules that are easy to miss when the example is copied mechanically. Check the feature-specific boundary shown by this construct: scope, mutability, evaluation order, type constraints, lifetime, error behavior, compile-time restrictions, or resource cleanup where applicable.

Content source & attribution
Original Syntaxis Content · Original Syntaxis Content

Lesson quizzes

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