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else 语句是合法的。...也就是说你可以在另一个 if 或者 else if 语句中使用 if 或者 else if 语句。 1.3K30【TypeScript】条件语句 条件语句用于基于不同的条件来执行不同的动作。 TypeScript 条件语句是通过一条或多条语句的执行结果(True 或 False)来决定执行的代码块。...在 TypeScript 中,我们可...
elif [ "$age" -ge 30 ] && [ "$age" -lt 40 ] then echo "You are in your 30s" elif [ "$age" -ge 40 ] && [ "$age" -lt 50 ] then echo "You are in your 40s" else echo "Sorry, please input a number." fi 运行: Please enter your age: 43 You are in your 40s 3 判...
function isLeapYear(year) { if (year % 4 === 0) { if (year % 100 === 0) { if (year % 400 === 0) { return true; // 能被400整除的年份是闰年 } else { return false; // 能被100整除但不能被400整除的年份不是闰年 } } else { return true; // 能被4整除但不能被100...
一、if 语句 if 语句通过关系运算符判断表达式的真假来决定执行哪个分支。 Shell 有三种 if ... else 语句: if ... fi 语句; if ... else ... fi 语句; if ... elif ... else ... fi 语句。 语法格式: if [ expre
今天就给大家介绍下Shell判断语句 if else 用法。if 语句通过关系运算符判断表达式的真假来决定执行哪个分支。Shell有三种 if else格式:if … fi 格式if … else … fi 格式if … el shell if 如何执行hive语句 Linux命令 Linux系列教程 Shell 技术知识...
echo "You Pick up Unix (Sun Os)" else ### nested if i.e. if within if ### if [ $osch -eq 2 ] ; then echo "You Pick up Linux (Red Hat)" else echo "What you don't like Unix/Linux OS." fi fi Run the above shell script as follows: $ chmod...
Node.js Version: 13.6 OS: Windows 7 (RIP) How can I detect whether my node.js file was called directly from console (windows and unix systems) or loaded using the ESM module import ( import {foo} from 'bar.js') The question was already a...
equals5[me@linuxbox~]$x=0[me@linuxbox~]$if[$x=5];thenecho"equals 5";elseecho"does not equal 5"; fi doesnotequal5 In this example, we execute the command twice. Once, with the value of x set to 5,which results in the string “equals 5” being output, and the second time wi...
echo "Usage: $0 weight_in_kilos length_in_centimeters" exit fi weight="$1" height="$2" idealweight=$[$height - 110] if [ $weight -le $idealweight ] ; then echo "You should eat a bit more fat." else echo "You should eat a bit more fruit." ...