FBWiki: KeyPgOpLessThan

Operator < (Less than)

Compares an expression less than another expression

Syntax:declare operator < ( byref lhs as byte, byref rhs as byte ) as integer declare operator < ( byref lhs as ubyte, byref rhs as ubyte ) as integer declare operator < ( byref lhs as short, byref rhs as short ) as integer declare operator < ( byref lhs as ushort, byref rhs as ushort ) as integer declare operator < ( byref lhs as integer, byref rhs as integer ) as integer declare operator < ( byref lhs as uinteger, byref rhs as uinteger ) as integer declare operator < ( byref lhs as longint, byref rhs as longint ) as integer declare operator < ( byref lhs as ulongint, byref rhs as ulongint ) as integer declare operator < ( byref lhs as string, byref rhs as string ) as integer declare operator < ( byref lhs as zstring, byref rhs as zstring ) as integer declare operator < ( byref lhs as wstring, byref rhs as wstring ) as integer declare operator < ( byref lhs as T, byref rhs as T ) as integer
Usage:result = lhs < rhs
Parameters:

lhs

The left-hand side expression to compare to.

rhs

The right-hand side expression to compare to.

T

Any pointer type.

Return Value:

Returns negative one (-1) if the left-hand side expression is less than the right-hand side expression, or zero (0) if greater than or equal.

Description:

Operator < (Less than) is a binary operator that compares two expressions for inequality and returns the result - a boolean value in the form of an Integer: negative one (-1) for true and zero (0) for false. The arguments are not modified in any way.

This operator can be overloaded to accept user-defined types as well.

Examples:

Const size As Integer = 4
Dim array(size - 1) As Integer = { 1, 2, 3, 4 }

Dim index As Integer = 0
While (index < size)
Print array(index)
index += 1
Wend

Operator >= (Greater than or equal) is complement to Operator < (Less than), and is functionally identical when combined with Operator Not (Bit-wise Complement).

If (69 < 420) Then Print "(69 < 420) is true."
If Not (69 >= 420) Then Print "not (69 >= 420) is true."

Dialect Differences:

In the -lang qb dialect, this operator cannot be overloaded.

Differences from QB:

none

See also:

Operator >= (Greater than or equal)

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FBWiki : KeyPgOpLessThan

Operator < (Less than)