测试结果: double->none 366msdouble->long 161msdouble->long2 188msdouble->format 564msdouble->Round 393ms 代码: using System; using System.Collections.Generic; using System.Diagnostics; using System.Linq; using System.Text; using System.Threading.…
Python 3 格式化字符串的几种方法! %s和%d,%s是用来给字符串占位置,%d是给数字占位置,简单解释下: a = 'this is %s %s' % ('an','apple') 程序输出的结果就是:this is an apple.很容易理解,第一个%s的值是用后面括号中第一个字符串替换的,第二个%s的值是后面括号中第二个字符串替换的,位置很重要.如果是这样: a = 'this is %s %s' % ('apple','an') 程序输出的结果就是:this is apple a…
4种方法,都是四舍五入,例: import java.math.BigDecimal; import java.text.DecimalFormat; import java.text.NumberFormat; public class format { double f = 111231.5585; public void m1() { BigDecimal bg = new BigDecimal(f); double f1 = bg.setScale(2, BigDecimal.ROUND…
Different ways to concatenate two strings in Golang - GeeksforGeeks https://www.geeksforgeeks.org/different-ways-to-concatenate-two-strings-in-golang/ Golang拼接字符串的5种方法及其效率_Chrispink-CSDN博客_golang 字符串拼接效率 https://blog.csdn.net/m0_37422289/article/deta…