From 11923e5b326b264ba56621f8e5d495dbd5c92cf0 Mon Sep 17 00:00:00 2001 From: "Li, Amazing Ang" Date: Mon, 28 Nov 2022 15:07:33 +0800 Subject: [PATCH] review translation 06 --- Languages/en/06_ArrayAndStruct_en/readme.md | 24 ++++++++++----------- 1 file changed, 11 insertions(+), 13 deletions(-) diff --git a/Languages/en/06_ArrayAndStruct_en/readme.md b/Languages/en/06_ArrayAndStruct_en/readme.md index 4b3939568..1152de1c2 100644 --- a/Languages/en/06_ArrayAndStruct_en/readme.md +++ b/Languages/en/06_ArrayAndStruct_en/readme.md @@ -17,9 +17,9 @@ In this lecture, we will introduce two important variable types in Solidity: `ar An `array` is a variable type commonly used in Solidity to store a set of data (integers, bytes, addresses, etc.). -There are two types of arrays: fixed-length arrays and variable-length arrays.： +There are two types of arrays: fixed-sized and dynamically-sized arrays.： -- Fixed-length arrays: Specify the length of the array at the time of declaration. An `array` is declared in the format `T[k]`, where `T` is the element type and `k` is the length. +- fixed-sized arrays: The length of the array is specified at the time of declaration. An `array` is declared in the format `T[k]`, where `T` is the element type and `k` is the length. ```solidity // fixed-length array @@ -28,7 +28,7 @@ There are two types of arrays: fixed-length arrays and variable-length arrays. address[100] array3; ``` -- Variable-length array（Dynamic Array）：Length of the array is not specified during declaration. It uses the format of `T[]`, where `T` is the element type. `bytes` is special case, it is an array but you don't need to add `[]` to it. +- Dynamically-sized array（dynamic array）：Length of the array is not specified during declaration. It uses the format of `T[]`, where `T` is the element type. `bytes` is special case, it is a dynamic array, but you don't need to add `[]` to it. ```solidity // variable-length array @@ -42,7 +42,7 @@ There are two types of arrays: fixed-length arrays and variable-length arrays. In Solidity, there are some rules for creating arrays： -- For a `memory` modified `dynamic array`, it can be created with the `new` operator, but the length must be declared, and the length cannot be changed after the declaration. For example： +- For a `memory` dynamic array, it can be created with the `new` operator, but the length must be declared, and the length cannot be changed after the declaration. For example： ```solidity // memory dynamic array @@ -61,12 +61,12 @@ In Solidity, there are some rules for creating arrays： x[2] = 4; ``` -### Array member +### Members of Array - `length`: Arrays have a `length` member containing the number of elements, and the length of a `memory` array is fixed after creation. -- `push()`: `Dynamic arrays` and `bytes` have a `push()` member that adds a `0` element at the end of the array. -- `push(x)`: `Dynamic arrays` and `bytes` have `push(x)` members, which can add an `x` element at the end of the array. -- `pop()`: `Dynamic arrays` and `bytes` have a `pop()` member that removes the last element of the array. +- `push()`: Dynamic arrays have a `push()` member function that adds a `0` element at the end of the array. +- `push(x)`: Dynamic arrays have a `push(x)` member function, which can add an `x` element at the end of the array. +- `pop()`: Dynamic arrays have a `pop()` member that removes the last element of the array. **Example:** @@ -74,7 +74,7 @@ In Solidity, there are some rules for creating arrays： ## Struct -`Dynamic arrays` and `bytes` have a `pop()` member that removes the last element of the array. +You can define new types in the form of `struct` in Solidity: ```solidity // struct @@ -82,13 +82,11 @@ In Solidity, there are some rules for creating arrays： uint256 id; uint256 score; } -``` -```solidity Student student; // Initially a student structure ``` -There are two ways to assign values to structures: +Elements of `struct` can be primitive types or reference types. And `struct` can be the element for `array` or `mapping`. There are two ways to assign values to `struct`: ```solidity // assign value to structure @@ -118,5 +116,5 @@ There are two ways to assign values to structures: ## Summary -In this lecture, we introduced the basic usage of array (`array`) and structure (`struct`) in Solidity. In the next lecture, we will introduce the hash table in Solidity - mapping (`mapping`)。 +In this lecture, we introduced the basic usage of `array` and `struct` in Solidity. In the next lecture, we will introduce the hash table in Solidity - `mapping`。