Here is an example: names = [] if not names: print("list is empty") Output: list is empty Similarly, we can also use the len() function in Python. The len() function takes the list as an argument and returns the number of elements in it. names = [] # checking if list is emp...
isEmpty(); } public static void main(String[] args) { List<Integer> nums = List.of(); boolean isEmpty = isEmpty(nums); if (isEmpty) { System.out.println("The collection is empty"); } else { System.out.println("The collection is not empty"); } } } Download Run Code Output:...
In Vue.js, you can check if a string is empty by using the JavaScript method 'str.length', which returns the number of characters in a string.This property returns the number of characters in the string, so if the string is empty, it will return 0. Here's an example of how you ca...
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在Linux的Shell脚本中,if语句用于条件判断。当需要在if语句中进行多个条件的并列判断时,可以使用逻辑运算符-a(与,AND)和-o(或,OR)来组合条件。 以下是一些基础概念: 逻辑运算符 -a:逻辑与,表示两个条件都为真时,整个表达式才为真。 -o:逻辑或,表示只要有一个条件为真,整个表达式就为真。
Learn the basics of the JavaScript `if` conditionalAn if statement is used to make the program take a route, or another, depending on the result of an expression evaluation.This is the simplest example, which always executes:if (true) { //do something }...
Describe the bug When listFn returns an error, the ListWatch is broken and no ERROR event is sent Client Version All Server Version n/a To Reproduce Fail the initial list function in a list/watch call. Expected behavior An error should be emitted to the done handler ...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 List<String>list=Arrays.asList("a","b","c","d","");//任意一个字符串判断不为空则为trueboolean anyMatch=list.stream().anyMatch(s->StringUtils.isEmpty(s));//所有字符串判断都不为空则为trueboolean allMatch=list.stream().allMatch(s->...
Check white space is available in a string using javascript checkBox checked become unchecked after sorting or paging checkbox list validation to check multiple(3) item has been checked checkbox: how to checked only one checkbox? Checking if an object exists? VB.NET Checking if datatable column ...
Error - Logical file is not part of database. Use RESTORE FILELISTONLY to list the logical file names Error : The label 'http' has already been declared. Label names must be unique within a query batch or stored procedure. Error :The cursor is READ ONLY. Error :UNION ALL view 'address...