currency

Currency formatting in Python

由 大兔子大兔子 提交于 2019-11-26 00:47:07
问题 I am looking to format a number like 188518982.18 to £188,518,982.18 using Python. How can I do this? 回答1: See the locale module. This does currency (and date) formatting. >>> import locale >>> locale.setlocale( locale.LC_ALL, '' ) 'English_United States.1252' >>> locale.currency( 188518982.18 ) '$188518982.18' >>> locale.currency( 188518982.18, grouping=True ) '$188,518,982.18' 回答2: New in 2.7 >>> '{:20,.2f}'.format(18446744073709551616.0) '18,446,744,073,709,551,616.00' http://docs.python

Representing Monetary Values in Java [closed]

由 99封情书 提交于 2019-11-26 00:30:14
I understand that BigDecimal is recommended best practice for representing monetary values in Java. What do you use? Is there a better library that you prefer to use instead? ninesided BigDecimal all the way. I've heard of some folks creating their own Cash or Money classes which encapsulate a cash value with the currency, but under the skin it's still a BigDecimal , probably with BigDecimal.ROUND_HALF_EVEN rounding. Edit: As Don mentions in his answer , there are open sourced projects like timeandmoney , and whilst I applaud them for trying to prevent developers from having to reinvent the

Why not use Double or Float to represent currency?

由 守給你的承諾、 提交于 2019-11-25 23:55:47
问题 I\'ve always been told never to represent money with double or float types, and this time I pose the question to you: why? I\'m sure there is a very good reason, I simply do not know what it is. 回答1: Because floats and doubles cannot accurately represent the base 10 multiples that we use for money. This issue isn't just for Java, it's for any programming language that uses base 2 floating-point types. In base 10, you can write 10.25 as 1025 * 10 -2 (an integer times a power of 10). IEEE-754

How can I format numbers as currency string in JavaScript?

由 偶尔善良 提交于 2019-11-25 22:52:29
问题 I would like to format a price in JavaScript. I\'d like a function which takes a float as an argument and returns a string formatted like this: \"$ 2,500.00\" What\'s the best way to do this? 回答1: Number.prototype.toFixed This solution is compatible with every single major browser: const profits = 2489.8237; profits.toFixed(3) //returns 2489.824 (rounds up) profits.toFixed(2) //returns 2489.82 profits.toFixed(7) //returns 2489.8237000 (pads the decimals) All you need is to add the currency

decimal vs double! - Which one should I use and when? [duplicate]

由 痞子三分冷 提交于 2019-11-25 22:18:32
问题 This question already has an answer here: When should I use double instead of decimal? 12 answers I keep seeing people using doubles in C#. I know I read somewhere that doubles sometimes lose precision. My question is when should a use a double and when should I use a decimal type? Which type is suitable for money computations? (ie. greater than $100 million) 回答1: For money, always decimal. It's why it was created. If numbers must add up correctly or balance, use decimal. This includes any

Currency formatting in Python

由 ⅰ亾dé卋堺 提交于 2019-11-25 21:06:47
I am looking to format a number like 188518982.18 to £188,518,982.18 using Python. How can I do this? S.Lott See the locale module. This does currency (and date) formatting. >>> import locale >>> locale.setlocale( locale.LC_ALL, '' ) 'English_United States.1252' >>> locale.currency( 188518982.18 ) '$188518982.18' >>> locale.currency( 188518982.18, grouping=True ) '$188,518,982.18' New in 2.7 >>> '{:20,.2f}'.format(18446744073709551616.0) '18,446,744,073,709,551,616.00' http://docs.python.org/dev/whatsnew/2.7.html#pep-0378 glenc Not quite sure why it's not mentioned more online (or on this

Use Float or Decimal for Accounting Application Dollar Amount?

由 此生再无相见时 提交于 2019-11-25 21:01:20
We are rewriting our legacy Accounting System in VB.NET and SQL Server. We brought in a new team of .NET/ SQL Programmers to do the rewrite. Most of the system is already completed with the Dollar amounts using Floats. The legacy system language, I programmed in, did not have a Float so I probably would have used a Decimal. What is your recommendation? Should Float or Decimal data type be used for dollar amounts? What are some of the pros and cons for either? One Con mentioned in our daily scrum was you have to be careful when you calculate an amount that returns a result that is over two

Best data type to store money values in MySQL

由 笑着哭i 提交于 2019-11-25 20:24:44
I want to store many records in a MySQL database. All of them contains money values. But I don't know how many digits will be inserted for each one. Which data type do I have to use for this purpose? VARCHAR or INT (or other numeric data types)? Since money needs an exact representation don't use data types that are only approximate like float . You can use a fixed-point numeric data type for that like decimal(15,2) 15 is the precision (total length of value including decimal places) 2 is the number of digits after decimal point See MySQL Numeric Types : These types are used when it is
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