ToStr

│ English (en) │

About

ToStr is helper function to convert any value to a string representation, including records and arrays, in the same spirit of 'print' functions found in scripting languages. Its usefull for logging and debugging.

function ToStr(const AValue; ATypeInfo: PTypeInfo): AnsiString;

Parametes:

• AValue: The variable to convert to string.
• ATypeInfo: The type information returned by 'TypeInfo' compiler intrinsic.

Download

You can get the code at https://github.com/correaelias/TypeUtils

Examples

Simple example.

program test;
uses TypeUtils;
var
  Arr: array[1 .. 3] of Integer = (1, 2, 3);
begin
  WriteLn(ToStr(Arr, TypeInfo(Arr)));
end.

Example converts array of record.

program Test;
     
uses TypeUtils, SysUtils;
     
type
  TEmployee = record
    FName: ShortString;
    FId: LongInt;
    FSalary: Currency;
  end;
     
var
  Employees: array of TEmployee;
  I: LongInt;
begin
  SetLength(Employees, 10);
     
  for I := 0 to High(Employees) do
  begin
    with Employees[I] do
    begin
      FName := 'John Doe ' + I.ToString;
      FId := I;
      FSalary := 2000.25 * I;
    end;
  end;
     
  WriteLn(ToStr(Employees, TypeInfo(Employees)));
end.

It shows:

[('John Doe 0', 0, 0), ('John Doe 1', 1, 2000.25), ('John Doe 2', 2, 4000.5), 
('John Doe 3', 3, 6000.75), ('John Doe 4', 4, 8001), ('John Doe 5', 5, 10001.25), 
('John Doe 6', 6, 12001.5), ('John Doe 7', 7, 14001.75), ('John Doe 8', 8, 16002), 
('John Doe 9', 9, 18002.25)]