Master programming syntax, solve interactive challenges & run live code in Syntaxis Explore Arena →
menu_book Course Curriculum (Ada) expand_more
Program Structure
with clauses use clauses procedure declaration package specification package body separate subunits declarative part begin end block pragma Assertion_Policy elaboration order
Types
integer types modular types floating types fixed point types enumeration types subtypes range constraints records discriminated records derived types
Control Flow
if elsif else case statement loop while loop for loop reverse iteration exit when declare block null statement case expression
Subprograms
procedures functions in parameters out parameters in out parameters default parameters overloading operator overloading expression functions pre post aspects
Arrays and Strings
constrained arrays unconstrained arrays array slicing array aggregates multidimensional arrays String Ada.Strings.Unbounded array attributes aliased components container vectors
OOP and Generics
tagged types type extension class-wide types dispatching calls interfaces abstract operations generic packages generic subprograms formal types mixins with interfaces
Concurrency
task type task body entry calls accept statement select statement protected type protected object delay statement rendezvous asynchronous transfer pattern
Exceptions and Systems
exception declaration raise exception handlers others handler re-raise access types Unchecked_Deallocation representation clauses address clauses volatile and atomic aspects
Ada / OOP and Generics

class-wide types

Learn class-wide types in Ada with a construct-specific explanation, unique example, engineering boundary, and mastery check.

10 min read • Intermediate

class-wide types is a focused Ada topic inside OOP and Generics. 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 class-wide types, then change one input and predict the result before running it.

Topic-specific example

ada-06-03-class-wide-types.adb
ada Try It Live 
procedure Draw(S : Shape'Class);
Edge case / engineering note

class-wide types 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

class-wide types Mastery Check →
← PREVIOUS
type extension
NEXT →
dispatching calls