currency

问题 I have experimented what is wrong with float and double types, in Java System.out.print(1-.6) prints .4 and the result is a bit unexpected (0.30000000000000004) in case of System.out.print(1-.7). It would be helpful if anyone is able to direct me towards some resources that explain WHY does it happen. I am assuming its not Java specific its something inherently wrong with these types. Thanks! 回答1: The real types in Java are implementations of IEEE754 single and double precision floating point

问题 If I do this: number_to_currency(100,:locale=>'en-GB') I'd expect to get something like this: £100.00 But instead I'm getting $100 This is the same if I pass in the locale :en, 'fr-FR' or whatever. Does Rails have a default list of currencies based on locale, or do I have to setup the I18 mappings for every country on the planet myself? Any help appreciated. Tobin 回答1: In the locale file, the currency unit is defined via number: currency: unit: "$" You have to do it yourself. This may help:

问题 i am making a currency selecting screen.for that i am displaying the list of currencies using the following code to create an array of currencies from which a tableview is populated NSArray *countryArray = [NSLocale ISOCurrencyCodes]; for(NSString *country in countryArray) { //NSLog(@"%@",[[NSLocale currentLocale] displayNameForKey:NSLocaleCurrencyCode value:country]); if([[NSLocale currentLocale] displayNameForKey:NSLocaleCurrencyCode value:country]) { [countriesArray addObject:[[NSLocale

问题 I am taking a C++ course right now and have completed my final assignment. However there is one thing that is bugging me: Though I have the correct outputs for the testing on a particular output, the basepay should be 133.20 and it is displaying as 133.2 . Is there a way to have this display the extra 0 rather than leaving it off? Anyone know if it's possible and how to do it? Thank you in advance My code is below: cout<< "Base Pay .................. = " << basepay << endl; cout<< "Hours in

问题 I've been programming for years, and I've also done a few professional programming projects. I recently had a friend ask about creating an e-commerce site, but I had to turn her down because I had never worked on a web application that can bill. I also might need to write a subscription-based web service in the future. My question is, how do I even get started with billing? I've never found a guide about this, and I barely know how bank accounts work since I don't manage my own one (I have an

问题 I have to match values like € 6.483,00 OR values like 18,50% OR, again, +65,86 % in a Javascript function, which I drafted as: function(s) { return /^[0-9]?[0-9,\.]*$/.test(s); } but, obviously, it's not working... how should it be changed? 回答1: var sample = [ "€ 6.483,00", "18,50%", "+65,86 %" ] for(var i = 0; i < sample.length; i++) { var input = sample[i]; var regex = /^(\u20ac ?)?\+?\d+(\.\d+)?(\,\d+)?( ?%)?$/ console.log(input + "\t" + regex.test(input)); } If there are cases that do not

问题 Currently, when applying the DataAnnotation Currency to a property, it then using DisplayFor renders this as the html : cshtml: <div>@Html.DisplayFor(m=>m.Price)</div> html: <div>$U 4.193,99</div> How can I change it so the currency symbol is not white-spaced ? I know I can apply a css to the div for white-space:nowrap; but it would be better if I can just change the currency string format to get : <div>$U 4.139,99</div> 回答1: You can use a custom display format (instead of the "Currency"

问题 I want to parse a String that i have into a Number. This is the Code that i'm using but not working: NumberFormat.getCurrencyInstance(Locale.GERMAN).parse("EUR 0,00"); This results in a java.text.ParseException So i want to match the String into a number, i don't really care about the currency, but it would be nice to have. I want the following kind of Strings matched: EUR 0,00 EUR 1.432,89 $0.00 $1,123.42 1,123.42$ 1,123.42 USD Sure, there are ways with RegEx, but i think it would be kind of

问题 With pipes like <input.... [ngModel]="whatever | myCurrencyPipe" (ngModelChange)="whatever = $event" type="text" name="myCurreny" ... you can format an existing value. Scarcely you want to overwrite the value, you have problems. And with the solution above, the double binding has been abrogated. There are plenty of jQuery-Libraries but I am looking for native angular2 solutions. Can someone help me? 回答1: Extend NgModel directive. Overwrite function viewToModelUpdate(value) called after every

问题 I am having some trouble validating a money input. I have used some pointers from my other questions to write some better code. The following is what I'm using to validate whether or not the input is money. static void Main(string[] args) { string myTest1 = "$1,234.56"; string myTest2 = "$1.00"; string myTest3 = "$1000.01"; string myTest4 = "$1,234,567.89"; myIsMaybeMoneyValidator Miimv = new myIsMaybeMoneyValidator(); bool myResult1 = Miimv.isMaybeMoney(myTest1); bool myResult2 = Miimv