Delphi Basics : RTL by starting letter : R

Delphi

Basics

Home | RTL by first letter

Type	Name	Summary

Compiler Directive	$R	Determines whether Delphi checks array bounds
Compiler Directive	$RangeChecks	Determines whether Delphi checks array bounds
Compiler Directive	$ReferenceInfo	Determines whether symbol reference information is built
Compiler Directive	$Resource	Defines a resource file to be included in the application linking
Function	RadToDeg	Converts a radian value to degrees
Keyword	Raise	Raise an exception
Function	Random	Generate a random floating point or integer number
Procedure	Randomize	Reposition the Random number generator next value
Function	RandomRange	Generate a random integer number within a supplied range
Variable	RandSeed	Reposition the Random number generator next value
Procedure	Read	Read data from a binary or text file
Procedure	ReadLn	Read a complete line of data from a text file
Type	Real	A floating point type supporting about 15 digits of precision
Type	Real48	The floating point type with the highest capacity and precision
Procedure	ReallocMem	Reallocate an existing block of storage
Function	RecodeDate	Change only the date part of a TDateTime variable
Function	RecodeTime	Change only the time part of a TDateTime variable
Keyword	Record	A structured data type - holding fields of data
Function	Rect	Create a TRect value from 2 points or 4 coordinates
Function	RemoveDir	Remove a directory
Procedure	Rename	Rename a file
Function	RenameFile	Rename a file or directory
Keyword	Repeat	Repeat statements until a ternmination condition is met
Procedure	ReplaceDate	Change only the date part of a TDateTime variable
Procedure	ReplaceTime	Change only the time part of a TDateTime variable
Procedure	Reset	Open a text file for reading, or binary file for read/write
Variable	Result	A variable used to hold the return value from a function
Procedure	ReWrite	Open a text or binary file for write access
Procedure	RmDir	Remove a directory
Function	Round	Rounds a floating point number to an integer
Procedure	RunError	Terminates the program with an error dialog

Run Time Library Reference

By first letter

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z $

By Functionality

Data types
	Integers, ordinals Floating point types String, char types Pointer types Other types
Program structure
	Program control Program data Looping Logic Object orientation
Options
	Control options Data options
Files
	Operations Data access File name handling

Strings and chars
	Operations Conversions from Conversions to Displaying
Numbers and sets
	Calculations Conversions from Conversions to Trigonometry Default numbers Displaying
Dates and Times
	Calculations Conversions from Conversions to Values Displaying

By Unit


System SysUtils StrUtils DateUtils	FileCtrl ConvUtils StdConvs Math	Classes Dialogs Types Variants

By Category


Compiler directives Directives Keywords	Types Variables Constants	Functions Procedures