例如,假设我们有一个名为 my_string 的字符串,其中包含一个 URL,我们想检查它是以“http”还是“https”开头。 我们可以使用 =~ 运算符来执行此比较。 my_string="https://www.example.com"if[[$my_string=~ ^https?:// ]];thenecho"The string starts with a valid URL"fi 输出: The string starts...
In addition to logical flags there are also logical operators. One of the most useful logical operators is the regex match operator=~. The regex match operator compares a string to a regular expression and if the string is a match for the regex then the expression is equivalent totrue, othe...
字符串操作符starts-with可以用来检查一个字符串是否以另一个字符串开头。 #!/bin/bash string="Powershell is awesome" prefix="Powershell" if [[ "$string" == $prefix* ]]; then echo "String starts with Powershell" else echo "String does not start with Powershell" fi ...
1.string.endswith(obj, beg=O,end=len(string)) :检查字符串是否以obj结束,如果beg或者end指定则检查指定的范围内是否以obj结束,如果是,返回True,否则返回False 2.string.islower() :如果string中包含至少一个区分大小写的字符,并且所有这些字符都是小写,则返回True,否则返回False 1. 2. 1.string.strip() :...
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语法startswith()方法语法：str.startswith(str, beg=0,end=len(string));参数str -- 检测的字符串...
~~这种在脚本第一行加一个#!行的做法叫做shebang或者hashbang，你也可以用python来代替ruby。
当你学习Java字符串的startsWith和endsWith方法时,你会发现它们是非常有用的工具。这两个方法可以帮助你检查一个字符串是否以指定的前缀开头或以指定的后缀结尾。...;if(b.startsWith("hello")){ System.out.println("以\"hello\"开头");} else { System.out.println("不以\...我们使用startsWith方法检查...
123Hello,World!starts with a digit(s). 让我们将$greet设置为一个新值,如下所示并运行脚本。 #!/bin/env bashgreet="Hello,World!123"if[[$greet=~ ^[0-9]]];thenprintf"$greetstarts with a digit(s).\n"elseprintf"$greetdoes not start with a digit(s)\n"fi ...
name = 'Swaroop' # This is a string object if name.startswith('Swa'): print 'Yes, the string starts with "Swa"' if 'a' in name: print 'Yes, it contains the string "a"' if name.find('war') != -1: print 'Yes, it contains the string "war"' ...