ascii

Credit Card validation: can Card Name contain non-ASCII characters?

由 前提是你 提交于 2020-01-09 19:00:26
问题 Can the Card Name (i.e. the cardholder name, not the card type) contain non-ASCII characters? Example: "JOSÉ GONZÁLEZ". 回答1: The character set that is used does not allow for diacritics. In brief, it only allows uppercase ASCII characters. The restriction ultimately comes from the historical way in which banking cards encode data onto the magnetic stripe (as defined in ISO 7811). The data is encoded in a 7 bits per character format known as ITU-T.50 The cardholder name is encoded with up to

Credit Card validation: can Card Name contain non-ASCII characters?

由 大兔子大兔子 提交于 2020-01-09 19:00:24
问题 Can the Card Name (i.e. the cardholder name, not the card type) contain non-ASCII characters? Example: "JOSÉ GONZÁLEZ". 回答1: The character set that is used does not allow for diacritics. In brief, it only allows uppercase ASCII characters. The restriction ultimately comes from the historical way in which banking cards encode data onto the magnetic stripe (as defined in ISO 7811). The data is encoded in a 7 bits per character format known as ITU-T.50 The cardholder name is encoded with up to

Printing an ASCII diamond with set width in python

由 孤者浪人 提交于 2020-01-09 11:32:50
问题 Yes, this is a homework task. But just please, if you're going to give me the code please tell me what you've done in detail. I am extremely new to this. So the task is to print an ASCII diamond depending on what width the user inputs. I can do the first half of the diamond, just not the bottom half, for some reason I just cannot see how to do it. Here's my code: wid = int(input("Width: ")) i = 1 while i <= wid: print(" " * (wid - i) + "* " * i) i = i + 1 Which will output the following if

mysql替换汉字为空

由 ☆樱花仙子☆ 提交于 2020-01-08 18:32:15
转自： https://blog.51cto.com/4925054/2058559 onvert(xxx using ascii), 所有汉字变成问号？了 再用replace将？转换为空字符串。 UPDATE pro99.b_common_product_data_pdf set brand =replace(convert(brand using ascii),'?','') 来源： CSDN 作者： vigel1990 链接： https://blog.csdn.net/c1052981766/article/details/103895585

源码必须是UTF-8，QString需要它

由 妖精的绣舞 提交于 2020-01-07 15:51:32
源码必须是UTF-8，QString需要它 来源 https://www.qt.io/cn/blog/2012/05/16/source-code-must-be-utf-8-and-qstring-wants-it Published on Wednesday May 16, 2012 by Debao Zhang in C++ Qt qtearth-blogs-chinese | Comments 原文链接： Thiago Macieira － Source code must be UTF-8 and QString wants it 先前 我讨论过源代码的编码问题，认为C++语言缺少一个必要的基本设置。尽管如此，从本周一开始，在某种程度上，Qt5现在已开始强制要求源代码必须是UTF-8。 将QString的8-bit成员函数所用的编码改为UTF-8的提交(commit)终于融入到 qtbase代码仓库 中。这正是我们为Qt5所规划的，从Robin Burchell移除 QTextCodec::setCodecForCStrings 开始的，一系列变更(changes)画上了完美的句号。但明确一点：QString内部仍采用UTF-16存储数据且不会改变。 为了理解这个变更是什么，我们需要回顾一点点历史。四年前， 我写了一篇叫做“字符串理论(String Theory)”的博客

Sql server bulk insert

由 那年仲夏 提交于 2020-01-07 05:06:41
Sql server bulk insert Bulk Insert Sql server 的bulk insert语句可以高效的导入大数据量的平面文件（txt，csv文件）到数据库的一张表中，其用法如下： bulk insert test from 'f:\test.txt' with (fieldterminator=',', rowterminator='\n') 其中"test"是数据库表的名字，"f:\test.txt"是导入平面文件的地址，fieldterminator指定平面文件中列的分隔符是什么，rowterminator指定平面文件中行的结束符是什么。 还可以使用FIRSTROW和LASTROW限制行数。如下COPY前三行： bulk insert test from 'f:\test.txt' with (fieldterminator=',', rowterminator='\n', FIRSTROW =1, LASTROW=3) 要把平面文件数据导入到数据库表中，平面文件只有3个字段，数据库表有7个字段， 怎么把平面文件字段的对应到表的字段，如何用bulk insert来实现? 数据库表 userinfo CREATE TABLE userinfo ( id INT identity, userName varchar(20), pass varchar

How to do math operations in Ascii?

由 泪湿孤枕 提交于 2020-01-07 03:07:33
问题 I'm trying to parse the latitude,longitude values from a GPS NMEA Packet. I receive the packet as a char array. I parsed the latitude array and now i need to do a multiplication operation on it. But it is a char array. For example, here is an example array: char *latitude; latitude[0] = '4'; latitude[1] = '0'; latitude[2] = '5'; I want to multiply this values by 2. It must output 8,0,10 respectively. So i need to get the 4,2,6 values as integer. But if i use this arrays content as integer, it

Handling accents in Oracle from Python

由 喜欢而已 提交于 2020-01-07 02:39:06
问题 I have the following code: #!/usr/bin/python # coding=UTF-8 import cx_Oracle def oracle_connection(user, passwd, host, port, service): oracle_con_details = user+'/'+passwd+'@'+host+':'+port+'/'+service try: oracle_connection = cx_Oracle.connect(oracle_con_details) except cx_Oracle.DatabaseError as e: error, = e.args if error.code == 1017: log.warning('Please check your credentials.') else: log.error('Database connection error: ') log.error(e) return oracle_connection user_oracle = "user"

NModbus4 read TXT from PLC

由 时光总嘲笑我的痴心妄想 提交于 2020-01-07 02:01:09
问题 I'm programming a Click PLC with a C# application with NModbus4. (RS232) Now i'm trying to read and write TXT data. This is the code and result: When I check the Click PLC software I can see that for each two chars one Modbus address is used. How can I get the text saved in the PLC? Someone got an idea? The text stored in the PLC is "Dit is tekst" 回答1: A Modbus register is 16-bit wide, so it can store two chars. This is why each two chars share the same address. That said, you need to infer

Encoding Issue in Talend Open Studio

由 你说的曾经没有我的故事 提交于 2020-01-06 19:48:12
问题 I am working on a Talend Project, Where we are Transforming data from 1000's of XML files to CSV and we are creating CSV file encoding as UTF-8 from Talend itself. But the issue is that some of the Files are created as UTF-8 and some of them created as ASCII , I am not sure why this is happening The files should always be created as UTF. 回答1: As mentioned in the comments, UTF8 is a superset of ASCII. This means that the code point for any ASCII characters will be the same in UTF8 as ASCII.
订阅 ascii