currency

问题 I need to store a couple of money related fields in the database but I'm not sure which data type to use between money and decimal . 回答1: Decimal and money ought to be pretty reliable. What i can assure you (from painful personal experience from inherited applications) is DO NOT use float! 回答2: I always use Decimal; never used MONEY before. Recently, I found an article regarding decimal versus money data type in Sql server that you might find interesting: Money vs Decimal It also seems that

问题 I feed a textbox a string value showing me a balance that need to be formatted like this: ###,###,###,##0.00 I could use the value.ToString("c"), but this would put the currency sign in front of it. Any idea how I would manipulate the string before feeding the textbox to achieve the above formatting? I tried this, without success: String.Format("###,###,###,##0.00", currentBalance); Many Thanks, 回答1: string forDisplay = currentBalance.ToString("N2"); 回答2: If the currency formatting gives you

问题 I'm creating a budget application with javascript. I have to let javascript do most of the operations. So I have some controls where the user changes the desired amount for a category and my application shows the new amounts for the subcategories. So If I have + Auto $50.23 - Gas $30.25 - Maintenance $6.27 - Insurance $10.02 - ... So if the user changes Auto 50.23 to 90.00, the amounts for Gas, Maintenance, Insurance, etc would reflect the % increase in their parent category. The problem is

问题 I have a value stored in a DB correlating to a monetary amount, say 10.0. I also have access to the Currency/CurrencyCode. How can I use NumberFormat/DecimalFormat/(other?) to format when I don't know the Locale? According to the docs it will pick a default locale which won't work with a foreign Currency. 回答1: The correct behavior, generally speaking, is to format the amount in the User's preferred locale, not the currency's typical locale. On the client side, you'll have the user's

问题 I'm dealing with lots of different currencies in my application, and I want to know what the "best" way is to store them in an SQLite3 database. I'm leaning towards a fixed-point representation (i.e. store them as integers, where $3.59 gets stored as 359, ¥400 stored as 40000). Is this a good idea? What if my input data later changes and requires more precision? 回答1: Given that SQLite 3 will use up to 8 bytes to store INTEGER types, unless you are going to have numbers greater than 10^16, you

问题 In Europe decimals are separated with ' , ' and we use optional ' . ' to separate thousands. I allow currency values with: US-style 123,456.78 notation European-style 123.456,78 notation I use the next regular expression (from RegexBuddy library) to validate the input. I allow optional two-digits fractions and optional thousands separators. ^[+-]?[0-9]{1,3}(?:[0-9]*(?:[.,][0-9]{0,2})?|(?:,[0-9]{3})*(?:\.[0-9]{0,2})?|(?:\.[0-9]{3})*(?:,[0-9]{0,2})?)$ I would like to parse a currency string to

问题 As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance. Closed 6 years ago . Anyone know of a real-time currency rate webservice with frequent update (multiple pr. min.). Needed for a small android app I'm

问题 I read about NSLocaleCurrencySymbol, but where would I find the variable used to determine the "number of decimal places" used in a country's currency? I.E. In the USA, it's common to see dollar amounts written with 2 decimal places: $1.23 What about many other countries? 回答1: There are a number of other countries that display a different number of decimal places. 2 is the majority, 0 (no cents in their currency, e.g., Japan) is the largest minority, 3 is used in just a few. No other number

问题 How do you convert a number to a string showing dollars and cents? eg: 123.45 => '$123.45' 123.456 => '$123.46' 123 => '$123.00' .13 => '$0.13' .1 => '$0.10' 0 => '$0.00' 回答1: PHP also has money_format(). Here's an example: echo money_format('$%i', 3.4); // echos '$3.40' This function actually has tons of options, go to the documentation I linked to to see them. Note: money_format is undefined in Windows. 回答2: If you just want something simple: '$' . number_format($money, 2); number_format()

问题 I have an Android app using In-App-Purchase that caters to an international audience, so I expect payments in different currencies. Of course I would like to show the items for purchase with the user's local currency, but I don't really know how. Using the region or language of a user seems like a bad indicator, as the currency seems to depend on the region of the Market account the user is using and not on the device settings. How can I find out which currency a user will pay in? Thanks. 回答1