open-closed

Two opposite positions

Open-closed describes something that combines or alternates between open and closed states.

In software engineering, the open-closed principle holds that code should be open for extension but closed for modification—you can add new functionality without changing existing code.

The term also appears in mathematics and topology to describe sets or intervals that are open on one end and closed on the other: The interval (0,1] is open-closed.

binary

toggle

Two-position switch

either-or · dichotomy · binary · two-state · flip · alternating · mutually exclusive · complementary · opposite · dual

access

membership

State of belonging

gated · invitation · admission · entry · barrier · availability · permissions · controlled · limited · unrestricted

topology

set

Arrange in position

compact · continuous · interior · closure · bounded · manifold · connectedness · dense

systems

feedback

Returned response data

entropy · isolated · boundary · equilibrium · exchange · energy flow · homeostasis · regulation · input-output · cybernetic

syllables

vowel

Unobstructed speech sound

long vowel · consonant · spelling · reading · decoding · phonetics · syllabication · literacy · orthography

questions

survey

Systematic data collection

polling · data collection · structured · unstructured · qualitative · quantitative · research design

software

principle

Fundamental truth or standard

inheritance · polymorphism · interface · module · architecture · refactoring · encapsulation · design pattern · maintainability · scalability

Opposites
binary state type

open-closedon-off

Having two states only

true-false · yes-no · public-private · in-out · up-down

degree of determinacy

open-closedajar

Partially open

half-open · gradual · continuous · spectrum · sliding scale

Family

open, closed, close, opens, opened, opening, opener, openness, openly

Familiarity
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