bcquality/microsoft/knowledge/style/single-space-around-binary-operators.md
Jesper Schulz-Wedde 2b5550c346
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Improve partner onboarding and documentation navigation (#174)
Lead with a complete plugin quick start and add task-oriented usage, troubleshooting, customization, and contribution guides. Preserve the broader plugin framing, correct conflicting contract guidance, support Agents folder reviews, and align repository validation. Convert existing sample references to clickable links without changing knowledge rules.

Co-authored-by: Jesper Schulz-Wedde <jesper.schulzwedde@microsoft.com>
Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
2026-09-09 17:31:03 +02:00

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---
bc-version: [all]
domain: style
keywords: [spacing, binary-operator, aa0001, codecop, formatting]
technologies: [al]
countries: [w1]
application-area: [all]
---
# One space on each side of every binary operator (CodeCop AA0001)
## Description
CodeCop AA0001 requires exactly one space on each side of every binary operator: assignment (`:=`), arithmetic (`+`, `-`, `*`, `/`, `mod`, `div`), comparison (`=`, `<>`, `<`, `<=`, `>`, `>=`), logical (`and`, `or`, `xor`), and string concatenation. `x:=1+2`, `Price:=Amount*Quantity`, `if a=b then`, and `if a and b then` all violate the rule. The rule applies to the binary use of `-` (subtraction); the unary minus (`-Profit`) takes no leading space.
## Best Practice
Write `x := 1 + 2`, `Price := Amount * Quantity`, `if a = b then`, `if a and b then`. The standard AL formatter inserts these spaces automatically; running `Alt+Shift+F` (Format Document) in the AL extension is the simplest way to bring an entire file into compliance.
See sample: [`single-space-around-binary-operators.good.al`](single-space-around-binary-operators.good.al).
## Anti Pattern
`x:=1+2;`, `Price:=Amount*Quantity;`, `if a=b then`, `if a and b then`. All trip AA0001.
See sample: [`single-space-around-binary-operators.bad.al`](single-space-around-binary-operators.bad.al).