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Operator or Inclusive Disjunction and Assign

Paul Squires edited this page Sep 19, 2026 · 1 revision

Home › Operators › Operator Or= (Inclusive Disjunction And Assign)

Operator Or= (Inclusive Disjunction And Assign)

Performs a bitwise-or (inclusive disjunction) and assigns the result to a variable

Syntax

Declare Operator Or= ( ByRef lhs As T1, ByRef rhs As T2 )

Parameters

  • lhs
  • T1
  • rhs
  • lhs
  • T2

Description

This operator performs a bitwise-or and assigns the result to a variable (for conversion of a boolean to an integer, false or true boolean value becomes 0 or -1 integer value). It is functionally equivalent to:

lhs = lhs Or rhs

Or= compares each bit of its operands, lhs and rhs, and if either bits are 1, then the corresponding bit in the first operand, lhs, is set to 1, otherwise it is set to 0.

This operator can be overloaded for user-defined types as a member Operator using the appropriate syntax.

Note: Similarly to the operator '=[>]' (assign), the alternative symbol 'Or=>' can be also used.

Remarks

Usage

lhs Or= rhs

Dialect Differences

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

Differences from QB

  • New to FreeBASIC

See also

Examples

Dim As UByte a = &b00110011

Dim As UByte b = &b01010101

a Or= b

'' Result    a = &b01110111

Print Bin(a)

Category: Operators
Kind: operator


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.

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