Constructor, operator "new" #88
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Article translated
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Error: the article already has PR number in the Progress Issue #1, it's 87 |
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odsantos
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Dec 27, 2019
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Hi Pedro,
A very good translation.
I hope not to give you much trouble with this review.
Please, feel free for giving any suggestions.
Thank you,
Osvaldo.
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| # Create new Calculator | ||
| # Crie uma calculadora new |
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- "# Crie
uma calculadoranew Calculator"
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| # Create new Accumulator | ||
| # Crie um acumulador new |
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- "# Crie
um acumuladornew Accumulator"
| let accumulator = new Accumulator(1); // valor inicial 1 | ||
| accumulator.read(); // adiciona o valor digitado pelo usuário | ||
| accumulator.read(); // adiciona o valor digitado pelo usuário | ||
| alert(accumulator.value); // apresenta a soma destses valores |
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- "// apresenta a soma
destsesdestes valores"
| # Construtor, operador "new" | ||
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| The regular `{...}` syntax allows to create one object. But often we need to create many similar objects, like multiple users or menu items and so on. | ||
| A sintaxe regular `{...}` permite criar um objeto. Mas frequentemente precisamos criar vários objetos iguais, como diversos usuários, itens de um menu, etc. |
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- "...precisamos de criar vários objetos..."
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| 1. They are named with capital letter first. | ||
| 2. They should be executed only with `"new"` operator. | ||
| 1. Elas são nomeadas com a primeira letra em maiúsculo. |
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- "...letra em
maiúsculomaiúsculas."
| john.sayHi(); // Meu nome é: John | ||
| */!* | ||
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| /* |
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- missing code: available at Methods in constructor
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| - Constructor functions or, briefly, constructors, are regular functions, but there's a common agreement to name them with capital letter first. | ||
| - Constructor functions should only be called using `new`. Such a call implies a creation of empty `this` at the start and returning the populated one at the end. | ||
| - Funções construtoras ou, resumidamente, construtores, são funções regulares, mas existe um acordo comum para nomeá-las com a primeira letra em maiúsculo. |
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- "...letra em
maiúsculomaiúsculas ."
| - Constructor functions or, briefly, constructors, are regular functions, but there's a common agreement to name them with capital letter first. | ||
| - Constructor functions should only be called using `new`. Such a call implies a creation of empty `this` at the start and returning the populated one at the end. | ||
| - Funções construtoras ou, resumidamente, construtores, são funções regulares, mas existe um acordo comum para nomeá-las com a primeira letra em maiúsculo. | ||
| - Funções construtoras deveriam ser chamadas apenas usando `new`. Tal chamada implica a criação de um `this` vazio no começo e retornando o completo ao final. |
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"...no começo e o retornando -o- completo ao final."
| Nós podemos usar funções construtoras para fazer diversos objetos iguais. | ||
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| JavaScript provides constructor functions for many built-in language objects: like `Date` for dates, `Set` for sets and others that we plan to study. | ||
| JavaScript fornece funções construtoras para muitos objetos de linguagem internos: como `Date` para datas, `Set` para armazenamento e outros que nós planejamos estudar. |
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- "...muitos objetos internos
deda linguageminternos:" - ",
Setparaarmazenamentoconjuntos e outros..."
('Set' in Algebra)
| Nesse capítulo nós cobrimos apenas o básico sobre objetos e construtores. Eles são essenciais para aprender mais sobre tipos de dados e funções nos próximos capítulos. | ||
| After we learn that, we return to objects and cover them in-depth in the chapters <info:prototypes> and <info:classes>. | ||
| Depois que aprendemos isto, nós voltamos para os objetos e os cobrimos a fundo nos capítulos <info:prototypes> e <info:classes>. |
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- "...que
aprendemos istoaprendermos isso,"
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Please make the requested changes. After it, add a comment "/done". |
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Article translated