park,unpark,ord这3个函数,在我们工作中,用到它们的估计不多. 我在最近一个工作中,因为通讯需要用到二进制流,然后接口用php接收.当时在处理时候,查阅不少资料.因为它们使用确实比较少,也很少朋友工作中会用到 它们. 在工作中,我也逐渐了解到park,unpark,ord对于二进制字节处理的强大. 下面我逐一介绍它们. park,unpark,ord函数使用介绍 park函数说明:本函数用来将资料压缩打包到位的字符串之中. 语法:pack(format,args+) 参数 描述 f

在工作中,我也逐渐了解到park,unpark,ord对于二进制字节处理的强大. 下面我逐一介绍它们.     park,unpark,ord这3个函数,在我们工作中,用到它们的估计不多. 我在最近一个工作中,因为通讯需要用到二进制流,然后接口用php接收.当时在处理时候,查阅不少资料.因为它们使用确实比较少,也很少朋友工作中会用到它们. 在工作中,我也逐渐了解到park,unpark,ord对于二进制字节处理的强大. 下面我逐一介绍它们. park,unpark,ord函数使用介绍 park函

B. Om Nom and Dark Park Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/526/problem/B Description Om Nom is the main character of a game "Cut the Rope". He is a bright little monster who likes visiting friends living a

Om Nom is the main character of a game "Cut the Rope". He is a bright little monster who likes visiting friends living at the other side of the park. However the dark old parks can scare even somebody as fearless as Om Nom, so he asks you to hel

在load csv 进mysql的时候,报这个错,苦恼了很长时间,网上搜索不到答案. mysql>    load data infile '/home/hdh/8_sr/8_45.csv'  into table  xizang.fp45 fields terminated by ','   escaped by '"' lines terminated by '\r\n'; 解决方案: 1.查看字符集,Linux, 数据库,表 mysql> show variables like

Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. s = "loveleetcode", return 2. Note: You may assume the string contain only lowercase

Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. s = "loveleetcode", return 2. 分析:找出字符串中第一次出现且不重复的字符,返回其字符的下标,如果不存在就返回-1. 用hashMap进行求

问题: 插入数据时,报了这样一个错误:“_mysql_exceptions.Warning: Incorrect string value: ‘\xE6\xB5\x81\xE8\xA1\x8C…’ for column ‘name’ at row 1”. 我使用了中文的数据,看起来就是一个字符集不兼容的错误:Django默认使用UTF-8,而mysqld那边配置是默认使用了latin1 – default collation . 解决办法如下: (1)设置my.cnf vim /etc/mysq

Problem: Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Example: s = "leetcode" return 0. s = "loveleetcode", return 2. 本题的第一想法是开一个字母表计数器,遍历string s中的元素,并利用计数器对每一个字母计

BeautifulSoup很赞的东西 最近出现一个问题:Python 3.3 soup=BeautifulSoup(urllib.request.urlopen(url_path),"html.parser") soup.findAll("a",{"href":re.compile('^http|^/')}) 出现warning: Some characters could not be decoded, and were replaced wi

在BaseFragment中使用了LoadingPage,而LoadingPage的联网加载使用的是AsyncHttpClient.一直报java.lang.IllegalArgumentException: Illegal character in query at index 261解析不成功,改成OkHttp解析即可. 网上有些方法,说先URLEncode再拼接,如果解决不了,换个联网请求方式,试一下.

今天遇到一个错误提示:ORA-06502:PL/SQL :numberic or value error: character string buffer too small,一般对应的中文信息为:ORA-06502: PL/SQL: 数字或值错误 :字符串缓冲区太小.仔细检查调试过程中才发现是开发人员定义了一个变量,但是在脚本里面赋予了该变量超过其长度的值.结果就报这个错误.我习惯总结每一个遇到的错误信息,既有利于学习.总结知识,也方便以后遇到此类问题能够及时给出解决方法. 如果执行oerr

Character类 用来判断大小写 方法: public static boolean isUpperCase(char ch):判断是否大写 public static boolean isLowerCase(char ch):判断是否小写 public static boolean isDightCase(char ch):判断是否为数字 public static char toUpperCase(char ch):转换成大写 public static char toLowerCase

原题链接在这里:https://leetcode.com/problems/first-unique-character-in-a-string/ 题目: Given a string, find the first non-repeating character in it and return it's index. If it doesn't exist, return -1. Examples: s = "leetcode" return 0. s = "lovele

Lukas Neuman--[ICDAR2015]Efficient Scene Text Localization and Recognition with Local Character Refinement 算法介绍 Fig. 2. Overview of the method. Initial text hypotheses efficiently generatedby a MSER detector are further refined using a local text mod

首先,确认字符集是否修改的不彻底.SELECT DISTINCT (NLS_CHARSET_NAME(CHARSETID)) CHARACTERSET,DECODE(TYPE#, 1, DECODE(CHARSETFORM, 1, 'VARCHAR2', 2, 'NVARCHAR2', 'UNKOWN'),9,DECODE(CHARSETFORM, 1, 'VARCHAR', 2, 'NCHAR VARYING', 'UNKOWN'),96,DECODE(CHARSETFORM, 1, 'CHA

The minimum interval between the leading edges of the start bits of two consecutive characters sent by the terminal to the ICC shall be between 12 and 266 etus as determined by the value of TC1 returned at the answer to reset (see sections 8.2 and 8.

MySql  控制台查询时出现乱码 Database&Table 的字符集 于Mysql控制台显示的字符集不一样 右键单击mysql控制台边框  单击属性  查看当前代码页的字符集模式是否于数据库的字符集模式一样 查看数据库字符集 show variables like '%char%'; 主要看的有:character-set-client=gbk     character-set-server=gbk    character-set-result=gbk  是否一样 解决:设置数据库字符

API文档charAt(int index)是这样定义的: charAt(char index):Returns the char value at the specified index.在指定的索引返回字符的值: 示例 使用charAt函数获取字符串strCom中索引值为4的char值,并将结果赋值给int变量strLower:              String strCom = "I like you";              int strLower  = strCo

系统安装Tomcat版本为:tomcat8,登录时报错"An invalid character [32] was present in the Cookie value" 处理方法将Tomcat降级为:tomcat7后登录正常.