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Ada Programming/Libraries/Ada.Strings.Unbounded.Text IO - Wikibooks, open books for an open world

From Wikibooks, open books for an open world

Ada.Strings.Unbounded.Text_IO is a GNAT implementation-defined package that offers Get_Line and Put_Line functions which work directly on unbounded strings. They are more efficient and easier to use than the standard Ada.Text_IO functions.

function Get_Line return Unbounded_String;

function Get_Line (File : Ada.Text_IO.File_Type) return Unbounded_String;

Reads up to the end of the current line, returning the result as an unbounded string of appropriate length. If no File parameter is present, input is from Current_Input.

procedure Put      (U    : Unbounded_String); 
procedure Put      (File : Ada.Text_IO.File_Type;  U : Unbounded_String); 
procedure Put_Line (U    : Unbounded_String); 
procedure Put_Line (File : Ada.Text_IO.File_Type;  U : Unbounded_String);

These are equivalent to the standard Text_IO routines passed the value To_String (U), but operate more efficiently, because the extra copy of the argument is avoided.

In Ada 2005 the standard equivalent to this package is Ada.Text_IO.Unbounded_IO.

• Ada Programming
• Ada Programming/Libraries
• Ada Programming/Libraries/Ada
• Ada Programming/Libraries/Ada.Strings
• Ada Programming/Libraries/Ada.Strings.Unbounded
• Ada Programming/Libraries/Ada.Text_IO
• Ada Programming/Libraries/Ada.Text_IO.Unbounded_IO
• Ada Programming/Input Output

• Search for examples of Ada.Strings.Unbounded.Text_IO in: Rosetta Code, GitHub (gists), any Alire crate or this Wikibook.
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• A.10.1 The Package Text_IO (Annotated)
• A.4.5 Unbounded-Length String Handling (Annotated)

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