Operator Less Than

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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

Parameters

• lhs
• rhs
• T

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.

When this operator is applied to string type data, then a lexicographic/alphabetic order comparison is performed (ordered from the numeric ASCII values of the characters of the two strings).

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

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.

Remarks

Usage

result = lhs < rhs

Dialect Differences

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

Differences from QB

• none

See also

• Operator >= (Greater than or equal)

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."

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Category: Operators
Kind: operator

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Reproduced from the FreeBASIC Wiki Manual under the GNU Free Documentation License 1.3 — with no Invariant Sections, no Front-Cover Texts and no Back-Cover Texts. Copyright © the FreeBASIC project and wiki contributors. See License.