Tag: clean-code — Code Glossary

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A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Extract Class Refactoring

Extract Class splits a large class into two — moving a cohesive subset of fields and methods into a new class that the original delegates to.

3mo ago Code Quality intermediate

Inline Temp Variable Refactoring

Inline Temp removes a temporary variable used only once when its name adds no clarity — replacing the variable reference with its expression directly.

3mo ago Code Quality beginner

Reducing Cyclomatic Complexity Techniques

Cyclomatic complexity counts independent code paths — reduce it by early returns, extracting conditions to named functions, using lookup tables, and replacing switch/if chains with polymorphism.

3mo ago Code Quality intermediate

Refactoring Boolean Flag Parameters

Boolean flags as function parameters obscure intent — replace with enums, separate functions, or named options objects for self-documenting APIs.

3mo ago Code Quality intermediate

Replace Magic Literal with Symbolic Constant

Magic literals (numbers/strings hardcoded without context) should become named constants — MAX_RETRIES = 3 is self-documenting; the literal 3 is not.

3mo ago Code Quality beginner

Cognitive Load in Code Design

The mental effort required to understand code — good design minimises extraneous cognitive load so developers can focus on the problem, not the code structure.

3mo ago General intermediate

Elvis Operator Not Used PHP 5.3+

Writing $x ? $x : $y instead of $x ?: $y — the Elvis operator (?:) returns the left operand if truthy, otherwise the right, eliminating the repeated expression.

3mo ago Style beginner

Null Coalescing Operator Not Used PHP 7.0+

Using isset() + ternary or if/else chains when the null coalescing operator (??) or null coalescing assignment (??=) would be cleaner and more idiomatic.

3mo ago Style beginner

Poor Variable Naming

Single-letter variables, cryptic abbreviations, or meaningless names like $data and $tmp — forcing readers to hold context in their head that the name should provide.

3mo ago Code Quality beginner

Unused Function PHP 7.0+

A function or method that is defined but never called — dead code that increases maintenance burden and confuses readers about what is part of the active API.

3mo ago Code Quality beginner

Unused Variable PHP 5.0+

A variable that is assigned but never read — indicating a logic error, incomplete refactoring, or unnecessary computation.

3mo ago Code Quality beginner

Verbose Type Functions PHP 7.0+

Using is_array(), is_string(), intval(), strval() where type declarations, casting, or native operators express intent more concisely and safely.

3mo ago PHP beginner

Guard Clause Pattern PHP 5.0+ 🧠 4

Return early from a function when a precondition fails, eliminating deeply nested if-else structures.

3mo ago Style beginner

Named Constructor Pattern PHP 5.0+

Static factory methods with descriptive names that replace overloaded constructors — making object creation intent clear when multiple creation paths exist.

3mo ago PHP intermediate

Refactoring PHP 5.0+ 🧠 4

Improving code structure without changing its external behaviour — cleaning up debt while keeping tests green.

3mo ago General beginner