Description Usually we use number in the decimal system, for it is so convenient for us to remember and calculate. But it is not the same in the computer world where numbers are always stored in the binary system. For example, the number 21 in decima…

一,十进制(decimal system)转换函数说明 1,十进制转二进制 decbin() 函数,如下实例 echo decbin(12); //输出 1100 echo decbin(26); //输出 11010 decbin (PHP 3, PHP 4, PHP 5) decbin -- 十进制转换为二进制 说明 string decbin ( int number ) 返回一字符串,包含有给定 number 参数的二进制表示.所能转换的最大数值为十进制的 4294967295,其结果为…

System.Data.DbType 与其它DbType的映射关系 有如下类型的映射对照: System.Data.SqlClient.SqlDbType System.Data.OleDb.OleDbType System.Data.Odbc.OdbcType System.Data.OracleClient.OracleType 格式: DbType.枚举名(枚举值) = DbType.枚举名(枚举值) =========== System.Data.SqlClient.SqlDbType…

Problem Description As we know , we always use the decimal system in our common life, even using the computer. If we want to calculate the value that 3 plus 9, we just import 3 and 9.after calculation of computer, we will get the result of 12. But af…

Problem Description As we know , we always use the decimal system in our common life, even using the computer. If we want to calculate the value that 3 plus 9, we just import 3 and 9.after calculation of computer, we will get the result of 12.But aft…

有如下类型的映射对照: System.Data.SqlClient.SqlDbType  System.Data.OleDb.OleDbType System.Data.Odbc.OdbcType System.Data.OracleClient.OracleType 格式: DbType.枚举名(枚举值) = DbType.枚举名(枚举值) =========== System.Data.SqlClient.SqlDbType ========= System.Data.SqlClient.S…

NHibernate之映射文件配置说明 1. hibernate-mapping 这个元素包括以下可选的属性.schema属性,指明了这个映射所引用的表所在的schema名称.假若指定了这个属性, 表名会加上所指定的schema的名字扩展为全限定名.假若没有指定,表名就不会使用全限定名.default-cascade 指定了未明确注明cascade属性的.Net属性和集合类.Net会采取什么样的默认级联风格. auto-import属性默认让我们在查询语言中可以使用非全限定名的类名.assemb…

直接抄: https://apollomapping.com/2012/August/article15.html For this month’s Geospatial Frequently Asked Question (G-FAQ), I pivot to a topic that deserves more attention than it gets, and that is bit depth. Some of you may have heard this term when or…

B. New Year and Old Property time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output The year 2015 is almost over. Limak is a little polar bear. He has recently learnt about the binary system. He…

1 十进制(decimal system)转换函数 ① 十进制转二进制 string  decbin(int number). 参数为一个十进制整型数字,不是整型数字会自动转为整型数字,如'3'转为3,‘a'转为0. 返回字符串 decbin(3.1) ==decbin(3.6)== decbin('3') == '11'       decbin('a') == '0' ②十进制转为8进制 string  decoct(int number). 参数为一个十进制整型数字,不是整型数字会自动转为…