Delphi Basics : RTL by starting letter : S

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Type	Name	Summary

Constant	SecsPerDay	Gives the number of seconds in a day
Procedure	Seek	Move the pointer in a binary file to a new record position
Function	SeekEof	Skip to the end of the current line or file
Function	SeekEoln	Skip to the end of the current line or file
Function	SelectDirectory	Display a dialog to allow user selection of a directory
Variable	Self	Hidden parameter to a method - refers to the containing object
Keyword	Set	Defines a set of up to 255 distinct values
Function	SetCurrentDir	Change the current directory
Procedure	SetLength	Changes the size of a string, or the size(s) of an array
Procedure	SetString	Copies characters from a buffer into a string
Keyword	Shl	Shift an integer value left by a number of bits
Variable	ShortDateFormat	Compact version of the date to string format
Variable	ShortDayNames	An array of days of the week names, starting 1 = Sunday
Type	ShortInt	An integer type supporting values -128 to 127
Variable	ShortMonthNames	An array of days of the month names, starting 1 = Jan
Type	ShortString	Defines a string of up to 255 characters
Variable	ShortTimeFormat	Short version of the time to string format
Procedure	ShowMessage	Display a string in a simple dialog with an OK button
Procedure	ShowMessageFmt	Display formatted data in a simple dialog with an OK button
Procedure	ShowMessagePos	Display a string in a simple dialog at a given screen position
Keyword	Shr	Shift an integer value right by a number of bits
Function	Sin	The Sine of a number
Type	Single	The smallest capacity and precision floating point type
Function	SizeOf	Gives the storage byte size of a type or variable
Function	Slice	Creates a slice of an array as an Open Array parameter
Type	SmallInt	An Integer type supporting values from -32768 to 32767
Function	Sqr	Gives the square of a number
Function	Sqrt	Gives the square root of a number
Procedure	Str	Converts an integer or floating point number to a string
Type	String	A data type that holds a string of characters
Function	StringOfChar	Creates a string with one character repeated many times
Function	StringReplace	Replace one or more substrings found within a string
Function	StringToWideChar	Converts a normal string into a WideChar 0 terminated buffer
Function	StrScan	Searches for a specific character in a constant string
Function	StrToCurr	Convert a number string into a currency value
Function	StrToDate	Converts a date string into a TDateTime value
Function	StrToDateTime	Converts a date+time string into a TDateTime value
Function	StrToFloat	Convert a number string into a floating point value
Function	StrToInt	Convert an integer string into an Integer value
Function	StrToInt64	Convert an integer string into an Int64 value
Function	StrToInt64Def	Convert a string into an Int64 value with default
Function	StrToIntDef	Convert a string into an Integer value with default
Function	StrToTime	Converts a time string into a TDateTime value
Function	StuffString	Replaces a part of one string with another
Function	Succ	Increment an ordinal variable
Function	Sum	Return the sum of an array of floating point values

Run Time Library Reference

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	Operations Conversions from Conversions to Displaying
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	Calculations Conversions from Conversions to Trigonometry Default numbers Displaying
Dates and Times
	Calculations Conversions from Conversions to Values Displaying

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