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Ferramentas de Dev

#[account(zero_copy)] (Anchor)

An Anchor attribute applied to account structs to enable zero-copy deserialization, where account data is accessed directly from the underlying byte buffer using repr(C) memory layout rather than Borsh deserialization. Zero-copy accounts use AccountLoader instead of Account and are accessed via load() or load_mut(). Best for large accounts where full deserialization would consume excessive compute units. Fields must be fixed-size types (no Vec, String, or Option).

IDzero-copy-attribute
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Leitura rápida

Comece pela explicação mais curta e útil antes de aprofundar.

An Anchor attribute applied to account structs to enable zero-copy deserialization, where account data is accessed directly from the underlying byte buffer using repr(C) memory layout rather than Borsh deserialization. Zero-copy accounts use AccountLoader instead of Account and are accessed via load() or load_mut(). Best for large accounts where full deserialization would consume excessive compute units. Fields must be fixed-size types (no Vec, String, or Option).

Modelo mental

Modelo mental

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Pense nisso como uma ferramenta ou abstração que reduz atrito no workflow de desenvolvimento em Solana.

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Anchor, validators locais, explorers, SDKs e fluxos de teste.

Por que builders ligam para isso

Por que builders ligam para isso

Transforme o termo de vocabulário em algo operacional para produto e engenharia.

Este termo destrava conceitos adjacentes rapidamente, então funciona melhor quando você o trata como um ponto de conexão, não como definição isolada.

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#[account(zero_copy)] (Anchor) (zero-copy-attribute)
Categoria: Ferramentas de Dev
Definição: An Anchor attribute applied to account structs to enable zero-copy deserialization, where account data is accessed directly from the underlying byte buffer using repr(C) memory layout rather than Borsh deserialization. Zero-copy accounts use AccountLoader instead of Account and are accessed via load() or load_mut(). Best for large accounts where full deserialization would consume excessive compute units. Fields must be fixed-size types (no Vec, String, or Option).
Relacionados: #[account] Macro (Anchor), Zero-Copy Deserialization, AccountLoader (Anchor)
Glossary Copilot

Faça perguntas de Solana com contexto aterrado sem sair do glossário.

Use contexto do glossário, relações entre termos, modelos mentais e builder paths para receber respostas estruturadas em vez de output genérico.

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Explicar este código

Opcional: cole código Anchor, Solana ou Rust para o Copilot mapear primitivas de volta para termos do glossário.

Faça uma pergunta aterrada no glossário

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O Copilot vai responder usando o termo atual, conceitos relacionados, modelos mentais e o grafo ao redor do glossário.

Grafo conceitual

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Esses ramos mostram quais conceitos esse termo toca diretamente e o que existe uma camada além deles.

Ramo

#[account] Macro (Anchor)

The Anchor macro applied to structs to define on-chain account data layouts. `#[account]` auto-derives Borsh serialization, adds an 8-byte discriminator prefix (SHA-256 of 'account:<Name>'), and implements space calculation. Optional attributes: `#[account(zero_copy)]` for zero-copy deserialization of large accounts.

Framework AnchorDiscriminador
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Ramo

Zero-Copy Deserialization

A technique for accessing on-chain account data directly from the underlying byte buffer without copying it into a new Rust struct, avoiding heap allocation and reducing compute unit usage. In Anchor, zero-copy is enabled via #[account(zero_copy)] on the account struct, which uses repr(C) layout and the AccountLoader type. Ideal for large accounts (>1KB) where Borsh deserialization would be expensive.

Account DataBorsh
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Ramo

AccountLoader (Anchor)

An Anchor account type that provides zero-copy access to large account data without deserializing the entire account upfront. AccountLoader wraps the raw account data and provides load() and load_mut() methods to access the data as a typed reference. It is used with #[account(zero_copy)] structs and is preferred over Account<T> when accounts exceed ~1KB, as it significantly reduces compute unit consumption.

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Próximos conceitos para explorar

Continue a cadeia de aprendizado em vez de parar em uma única definição.

Estes são os próximos conceitos que valem abrir se você quiser que este termo faça mais sentido dentro de um workflow real de Solana.

Ferramentas de Dev

#[account] Macro (Anchor)

The Anchor macro applied to structs to define on-chain account data layouts. `#[account]` auto-derives Borsh serialization, adds an 8-byte discriminator prefix (SHA-256 of 'account:<Name>'), and implements space calculation. Optional attributes: `#[account(zero_copy)]` for zero-copy deserialization of large accounts.

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Modelo de Programação

Zero-Copy Deserialization

A technique for accessing on-chain account data directly from the underlying byte buffer without copying it into a new Rust struct, avoiding heap allocation and reducing compute unit usage. In Anchor, zero-copy is enabled via #[account(zero_copy)] on the account struct, which uses repr(C) layout and the AccountLoader type. Ideal for large accounts (>1KB) where Borsh deserialization would be expensive.

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Modelo de Programação

AccountLoader (Anchor)

An Anchor account type that provides zero-copy access to large account data without deserializing the entire account upfront. AccountLoader wraps the raw account data and provides load() and load_mut() methods to access the data as a typed reference. It is used with #[account(zero_copy)] structs and is preferred over Account<T> when accounts exceed ~1KB, as it significantly reduces compute unit consumption.

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Ferramentas de Dev

Framework Anchor

The most popular framework for building Solana programs in Rust. Anchor provides macros (#[program], #[account], #[derive(Accounts)]) that auto-generate boilerplate for account validation, serialization, discriminators, and error handling. It includes a CLI (anchor init/build/test/deploy), IDL generation, and TypeScript client generation. Reduces program code by ~80% compared to native development.

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Comumente confundido com

Termos próximos em vocabulário, sigla ou vizinhança conceitual.

Essas entradas são fáceis de misturar quando você lê rápido, faz prompting em um LLM ou está entrando em uma nova camada de Solana.

Ferramentas de Devanchor-account-macro

#[account] Macro (Anchor)

The Anchor macro applied to structs to define on-chain account data layouts. `#[account]` auto-derives Borsh serialization, adds an 8-byte discriminator prefix (SHA-256 of 'account:<Name>'), and implements space calculation. Optional attributes: `#[account(zero_copy)]` for zero-copy deserialization of large accounts.

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Ferramentas de Devanchor-init

anchor init / anchor build / anchor test

Anchor CLI commands for project lifecycle. `anchor init <name>` scaffolds a new project (program, tests, Anchor.toml). `anchor build` compiles to SBF and generates the IDL. `anchor test` builds, starts a local validator, deploys, and runs Mocha/Jest tests. `anchor deploy` deploys to the configured cluster. `anchor verify` checks deployed bytecode.

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Ferramentas de Devanchor-v031

Anchor v0.31

A major release (March 2025) of the Anchor framework introducing custom discriminators (overriding the default 8-byte discriminator to save transaction space), LazyAccount for on-demand deserialization to reduce compute costs, and stack memory optimizations for init constraints. Positioned as a major milestone on the roadmap toward v1.0.

AliasAnchor 0.31.0
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Termos relacionados

Siga os conceitos que realmente dão contexto a este termo.

Entradas de glossário só ficam úteis quando estão conectadas. Esses links são o caminho mais curto para ideias adjacentes.

Ferramentas de Devanchor-account-macro

#[account] Macro (Anchor)

The Anchor macro applied to structs to define on-chain account data layouts. `#[account]` auto-derives Borsh serialization, adds an 8-byte discriminator prefix (SHA-256 of 'account:<Name>'), and implements space calculation. Optional attributes: `#[account(zero_copy)]` for zero-copy deserialization of large accounts.

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Modelo de Programaçãozero-copy-deserialization

Zero-Copy Deserialization

A technique for accessing on-chain account data directly from the underlying byte buffer without copying it into a new Rust struct, avoiding heap allocation and reducing compute unit usage. In Anchor, zero-copy is enabled via #[account(zero_copy)] on the account struct, which uses repr(C) layout and the AccountLoader type. Ideal for large accounts (>1KB) where Borsh deserialization would be expensive.

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Modelo de Programaçãoaccount-loader

AccountLoader (Anchor)

An Anchor account type that provides zero-copy access to large account data without deserializing the entire account upfront. AccountLoader wraps the raw account data and provides load() and load_mut() methods to access the data as a typed reference. It is used with #[account(zero_copy)] structs and is preferred over Account<T> when accounts exceed ~1KB, as it significantly reduces compute unit consumption.

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Mais na categoria

Permaneça na mesma camada e continue construindo contexto.

Essas entradas vivem ao lado do termo atual e ajudam a página a parecer parte de um grafo maior, não um beco sem saída.

Ferramentas de Dev

Framework Anchor

The most popular framework for building Solana programs in Rust. Anchor provides macros (#[program], #[account], #[derive(Accounts)]) that auto-generate boilerplate for account validation, serialization, discriminators, and error handling. It includes a CLI (anchor init/build/test/deploy), IDL generation, and TypeScript client generation. Reduces program code by ~80% compared to native development.

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Ferramentas de Dev

#[account] Macro (Anchor)

The Anchor macro applied to structs to define on-chain account data layouts. `#[account]` auto-derives Borsh serialization, adds an 8-byte discriminator prefix (SHA-256 of 'account:<Name>'), and implements space calculation. Optional attributes: `#[account(zero_copy)]` for zero-copy deserialization of large accounts.

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Ferramentas de Dev

#[derive(Accounts)] (Anchor)

The Anchor macro that defines the accounts struct for an instruction. Each field specifies an account with validation constraints. Account types include: `Account<'info, T>` (deserialized), `Signer<'info>` (must sign), `Program<'info, T>` (program reference), `SystemAccount<'info>`, and `UncheckedAccount<'info>` (no validation, use carefully).

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Ferramentas de Dev

Anchor Constraints

Declarative validation rules on Anchor account fields. Key constraints: `#[account(mut)]` (writable), `#[account(init, payer=x, space=n)]` (create), `#[account(seeds=[...], bump)]` (PDA validation), `#[account(has_one=field)]` (field equality), `#[account(constraint = expr)]` (custom boolean), `#[account(close=target)]` (close and reclaim rent).

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