Detailed introduction to constructing arrays

I suddenly thought of a problem when I was coding a while ago. Usually our array is passed into the method as a parameter. What if we want to create an array in the method? When the type is clear, this is not difficult. What if the parameters we pass in are parameters of a generic type? public static T[] creArray (T obj){ T[] arr = new T[10]; }The above method of using T to create a new array directly is wrong, and an error will appear during compilation: Cannot create a generic array of T.. Java does not support directly creating arrays of unknown types. Finally I got such a perfect solution: package Tes

1. java—Constructing arrays with generic parameter types

Introduction: I suddenly thought of a problem when I was coding a while ago. Usually our array is passed into the method as a parameter. What if we want to create an array in the method? When the type is clear, this is not difficult. What if the parameters we pass in are parameters of a generic type? public static T[] creArray (T obj){ T[] arr = new T[10];} It is wrong to use T to directly new the array like the above method, and a

will appear during compilation.

2. Use the array function in PHP to create a new array_php instance

Introduction: PHP supports single-dimensional and multi-dimensional arrays. At the same time, it provides a function to construct an array using database query results. The array function is a core component of PHP. This article will introduce you to using the array function to create a new array in PHP. Friends who need it can refer to it

3. 05. Linear table (4) linked storage structure. Static linked list

# #Introduction: Linked storage structure. Static linked list 1. Static linked list 1. Static linked list storage structure A singly linked list is implemented through pointers, but we can also use an array instead of a pointer to describe a singly linked list, that is, a static linked list. How to implement static linked list? The elements of the constructed array consist of two data fields: data and cur, that is, each subscript of the array corresponds to a data and a cur. Data

4. How to construct an array in php

Introduction: {Code...} I write prompts like this Parse error: syntax error, unexpected T_FOREACH, expecting ')', how to modify it?

5. Use the array function in PHP to create a new array_PHP

Introduction: PHP supports single-dimensional and multi-dimensional array. At the same time, it provides a function to construct an array using database query results. The array function is a core component of PHP. This article will introduce you to using the array function to create a new array in PHP. Friends who need it can refer to it

6. js creates an array to json function_javascript skills

Introduction: What I share here is a function code that uses js to convert an array into json , the code is concise and easy to understand, and the usage method is attached. Friends, try it out.

[Related Q&A recommendations]:

How to construct an array in php

The above is the detailed content of Detailed introduction to constructing arrays. For more information, please follow other related articles on the PHP Chinese website!