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one fable-low hijack cell

pair immutable / mutable envelope en_vs ordering BA effort low

English 'vs' framing — '{X} vs {Y}'

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# Immutable vs Mutable

## Core Definition

- **Mutable**: Objects whose state/contents **can be changed** after creation
- **Immutable**: Objects whose state **cannot be changed** after creation — an

neighbors

ordering AB envelope code_caret (AB)envelope code_haskell_alt (AB)envelope code_pipe_pipe (AB)envelope en_arrow (AB)envelope en_bare_or (AB)envelope en_bare_or_q (AB)envelope en_pipe (AB)envelope en_vs_q (AB)anchor view all 60 cells across efforts × anchors