Beginner terms
Regex Character Classes
PHP 5.3+
Bracketed sets like [a-z] or [0-9] that match exactly one character from a defined group, plus predefined shorthands like \d, \w, and \s.
1mo ago
Regex beginner
Rust String vs str
String is an owned, growable, heap-allocated UTF-8 buffer; str is a borrowed, immutable view usually seen as the reference &str.
3mo ago
Rust beginner
Rust Ownership and Borrowing
1
Ownership gives each value one owner and borrowing lends temporary access, letting Rust guarantee memory safety without a garbage collector.
4mo ago
Rust beginner
Rust Error Handling with Result
1
Rust models recoverable errors as Result<T, E> values returned from functions, not thrown exceptions, with the ? operator for propagation.
4mo ago
Rust beginner
readonly Classes (PHP 8.2)
PHP 8.2+
PHP 8.2 readonly classes make all promoted properties readonly automatically — the cleanest way to define immutable value objects and DTOs.
6mo ago
PHP beginner
readonly Properties (PHP 8.1)
PHP 8.1+
PHP 8.1 readonly properties can only be written once (in the constructor) — enforcing immutability without verbose accessor boilerplate.
6mo ago
PHP beginner
Redis
PHP 7.0+
5
An in-memory key-value data store used in PHP applications for caching, session storage, queues, rate limiting, and pub/sub — providing sub-millisecond data access compared to database queries.
6mo ago
Performance beginner
Regex Flags (i, g, m, s, x, u)
PHP 5.3+
1
Modifiers appended to a regex pattern that change matching behaviour — case-insensitivity, multiline mode, dotall mode, extended whitespace, and Unicode awareness.
6mo ago
Regex beginner
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.
6mo ago
Code Quality beginner
Responsive Design
1
A CSS approach where layouts adapt to different screen sizes using fluid grids, flexible images, and media queries — one codebase that works across mobile, tablet, and desktop.
6mo ago
Mobile beginner
Return Type Declarations (PHP 7.0)
PHP 7.0+
PHP 7.0 return type declarations (:int, :string, :void, :static, :never) enable functions to declare what they return — making return contract violations detectable at runtime and by static analysis.
6mo ago
PHP beginner
ReferenceError — Undefined Variables
ES2015
ReferenceError is thrown when accessing a variable that hasn't been declared — unlike undefined which is a declared variable with no value.
6mo ago
JavaScript beginner
Runbooks & Playbooks
2
Documented step-by-step procedures for handling operational tasks and incidents — ensuring any on-call engineer can respond correctly under pressure without tribal knowledge.
6mo ago
General beginner
Refactoring
PHP 5.0+
4
Improving code structure without changing its external behaviour — cleaning up debt while keeping tests green.
6mo ago
General beginner
register_globals (Legacy Audit)
PHP 5.0+
1
A removed PHP setting that automatically created global variables from GET/POST/COOKIE input, enabling trivial variable injection attacks.
CWE-473 OWASP A3:2021
6mo ago
PHP beginner
9.8
Regression Testing
1
Re-running existing tests after code changes to verify that previously working functionality has not been broken — the primary safety net for continuous delivery.
6mo ago
Testing beginner
REST (Representational State Transfer)
3
An architectural style for distributed hypermedia systems using HTTP verbs, stateless interactions, and resource-oriented URLs.
6mo ago
Architecture beginner