literals

简明释义

英[ˈlɪtərəlz]美[ˈlɪtərəlz]

n. 误印（literal 的复数）

英英释义

单词用法

同义词

反义词

例句

1.Single quoted strings are simple, straight literals.

而单引号引用的字符串则是简单直接的文字。

2.RDF literals can be given data types such as "integer", "string", "date", or even "morse code".

可以为RDF文字给定数据类型，如“整数”、“字符串”、“日期”或甚至是“莫尔斯代码”。

3.The literals are strings like "Psycho" and integers like 1960.

文本是指“Psycho ”这样的字符串和1960这样的整数。

4.The IDL boolean constants TRUE and FALSE are mapped to the corresponding Java boolean literals true and false.

IDL 的布尔常量TRUE和FALSE映射到相应的布尔量 true 和 false 。

5.String literals a, b, c...

字符串字面值，比如a、b、c等等。

6.Most often, an alias abbreviates literals.

别名通常只是单纯的缩写。

7.Redundant type literals can be removed and replaced with the diamond operator.

可以用操作符替换冗余的类型说明。

8.In programming, we often use literals to represent fixed values such as numbers or strings.

在编程中，我们经常使用字面量来表示固定值，例如数字或字符串。

9.The JSON format requires string literals to be enclosed in double quotes.

JSON格式要求字符串字面量用双引号括起来。

10.When defining a color in CSS, you can use hex literals like #FF5733.

在CSS中定义颜色时，可以使用像#FF5733这样的十六进制字面量。

11.In SQL, string literals should be surrounded by single quotes.

在SQL中，字符串字面量应当用单引号括起来。

12.You can mix literals and variables in a string interpolation.

你可以在字符串插值中混合字面量和变量。

作文

In the world of programming and computer science, the term literals refers to fixed values that are explicitly defined in the code. These literals can represent various data types, such as numbers, characters, strings, or boolean values. Understanding literals is crucial for anyone looking to write effective code, as they form the basic building blocks of any programming language. For example, when we write a simple line of code like 'x = 5', the number '5' is a literal that directly represents the value assigned to the variable 'x'. Similarly, in a statement like 'name = "John"', the string "John" is also a literal. There are several types of literals that programmers commonly use. Numeric literals can be either integers or floating-point numbers. For instance, '42' is an integer literal, while '3.14' is a floating-point literal. Character literals are represented by single quotes, such as 'A' or 'z'. String literals, on the other hand, are enclosed in double quotes, like "Hello, World!". Boolean literals are the simplest, consisting of just two values: true and false. The importance of literals extends beyond their definition; they play a significant role in code readability and maintainability. When programmers use descriptive literals, it helps others (and themselves) understand the purpose of the code more easily. For example, instead of using a literal like '10' without context, using a descriptive name like 'maxAttempts = 10' clarifies that this literal represents the maximum number of attempts allowed. This practice not only enhances clarity but also reduces the likelihood of errors when modifying the code later. Moreover, literals can also have implications for performance. In many programming languages, literals are often evaluated at compile time, which means they are processed before the program runs. This can lead to more efficient code, as the compiler can optimize the usage of these literals. However, excessive use of literals without proper organization can lead to code that is difficult to manage and update. Therefore, it is essential for developers to strike a balance between using literals effectively and maintaining a clean code structure. In conclusion, literals are fundamental components in programming that represent fixed values in code. They come in various forms, including numeric, character, string, and boolean literals. Understanding how to use literals effectively can greatly enhance the readability, maintainability, and performance of code. As aspiring programmers, it is vital to grasp the concept of literals and apply them thoughtfully in our coding practices. By doing so, we can create more efficient and understandable programs that stand the test of time.

在编程和计算机科学的世界中，术语literals指的是在代码中明确定义的固定值。这些literals可以表示各种数据类型，例如数字、字符、字符串或布尔值。理解literals对任何希望编写有效代码的人来说都是至关重要的，因为它们构成了任何编程语言的基本构建块。例如，当我们写一行简单的代码，如'x = 5'时，数字'5'就是一个literal，它直接表示分配给变量'x'的值。类似地，在语句'name = "John"'中，字符串"John"也是一个literal。 程序员常用的literals有几种类型。数字literals可以是整数或浮点数。例如，'42'是一个整数literal，而'3.14'是一个浮点literal。字符literals用单引号表示，例如'A'或'z'。另一方面，字符串literals用双引号括起来，比如"Hello, World!"。布尔literals是最简单的，仅由两个值组成：true和false。 literals的重要性不仅在于它们的定义；它们在代码的可读性和可维护性方面也发挥着重要作用。当程序员使用描述性的literals时，可以帮助其他人（以及他们自己）更轻松地理解代码的目的。例如，与其使用没有上下文的literal如'10'，不如使用描述性名称'maxAttempts = 10'来明确这一literal表示允许的最大尝试次数。这种做法不仅提高了清晰度，还减少了在稍后修改代码时出错的可能性。 此外，literals的使用还可能影响性能。在许多编程语言中，literals通常在编译时评估，这意味着它们在程序运行之前被处理。这可以导致更高效的代码，因为编译器可以优化这些literals的使用。然而，过度使用literals而没有适当的组织可能会导致难以管理和更新的代码。因此，开发人员必须在有效使用literals和保持代码结构清晰之间取得平衡。 总之，literals是编程中的基本组成部分，表示代码中的固定值。它们有各种形式，包括数字、字符、字符串和布尔literals。理解如何有效使用literals可以大大增强代码的可读性、可维护性和性能。作为有抱负的程序员，掌握literals的概念并在我们的编码实践中加以应用至关重要。通过这样做，我们可以创建更高效、更易理解的程序，经得起时间的考验。