Reading this question, I wanted to test if I could demonstrate the non-atomicity of reads and writes on a type for which the atomicity of such operations is not guaranteed. private static double _d; [STAThread] static void Main() { new Thread(KeepMutating).Start(); KeepReading(); } private static void KeepReading() { whil...
Im talking about two separate touches on the screen with the same finger I think i have the coding right for this. but it is almost impossible for me to actually generate a double tap on my iPad. Is it possible to increase the time interval between a single and double tap, so it is easier to trigger. I do a double tap very fast and it c...
I've gotten a request from a client to underline text in a text field. Both single and double lines. Is this even possible? I assume with some obscure plugin but I haven't found it yet. :P I've thought about there being 2 possibilities, if this is possible. 1) Underlining the text in the actual field. 2) Doing some crazy hack with tex...
What's the least (negative) integer value that can be exactly represented by Double type in all major x86 systems? Especially in (simultaneously) JVM, MySQL, MS SQL Server, .Net, PHP, Python and JavaScript (whatever corresponding type it uses). The reason why I ask about this is because I'd like to choose a value to use to represent an ...
I am trying to make a BigDecimal from a string. Don't ask me why, I just need it! This is my code: Double theDouble = new Double(".3"); System.out.println("The Double: " + theDouble.toString()); BigDecimal theBigDecimal = new BigDecimal(theDouble); System.out.println("The Big: " + theBigDecimal.toString()); This is the output I get? ...
Is there a way to put an int and a Double in the same array. I want to have an array (p1[]) where the first (p1[0]) is an int and all the rest of the elements are doubles. Is this possible? ...
I have an sql: SELECT Sum(Field1), Sum(Field2), Sum(Field1)+Sum(Field2) FROM Table GROUP BY DateField HAVING Sum(Field1)+Sum(Field2)<>0; Problem is sometimes Sum of field1 and field2 is value like: 9.5-10.3 and the result is -0,800000000000001. Could anybody explain why this happens and how to solve it? ...
I am having a bit of trouble understanding how the precision of these doubles affects the outcome of arithmetic operations in Matlab. I thought that since both a & b are doubles they would be able to carry out operations up to that precision. I realize there can be round-off error but since these numbers are well within the 64-bit number...
Hello all, I have to convert a double to string with the following rules: If decimal point position is -1 (or another non-existing value meaning 'Auto'), fractional part of the number should be output with all significant digits (all zeroes at the end should be trimmed). If the double is integer, its fractional part shouldn't output a...
Hi I would guess it's the simplest thing but it's really confusing me. I'm sure I've successfully used doubles before but now I'm having trouble. I just made a new 'test' project to see if I can get it working, but all I'm trying to do is set a double value. So in the View Controller's viewDidLoad i've typed: double z = 2938.09; NSL...
Hello, I am using "double" in Hibernate .hbm.xml files, and when I generate classes with Hibernate Tool I get class property which has primitive type double. I want this property to be java wrapper type Double. How can I achieve this? If I change this manually in my classes, is it going to give any issues to hibernate? Thanks ...
Hi all, I'm using NSNumber to store various values, but sometimes run into issues when doing calculations with the values and initializing new NSNumber objects for the results. I've figured out how to overcome it, but I couldn't for the life of me explain why it works and since my grasp on numerical values in computer environments (doub...
May I know what is the difference among Double.MIN_NORMAL (introduced in 1.6) and Double.MIN_VALUE? JavaDoc of Double.MIN_NORMAL: A constant holding the smallest positive normal value of type double, 2-1022 JavaDoc of Double.MIN_VALUE: A constant holding the smallest positive nonzero value of type double, 2-1074 ...
I handle a lot of time stamps that I store as NSTimeInterval. NSDateComponents* comps = [[NSDateComponents alloc] init]; [comps setYear: .... NSDate* date = [gregorian dateFromComponents:comps]; NSTimeInterval timeStamp = [date timeIntervalSinceReferenceDate]; Interface Builder has a table view binding to the variable of the time stam...
I know bubble sort is probably not the fastest way to do this but its acceptable. i'm just having trouble with adjusting the algorithm to double link lists from arrays. My double linked lists have a type int and a type string to hold a number and a word. My list was sorted with an insertion sort that I wrote to sort alphabetically, now ...
I'm using ODP.NET to access Oracle DB from C# .NET. Please see following code: OracleConnection con = new OracleConnection(); con.ConnectionString = "User Id=user;Password=pass;Data Source=localhost/orcl"; con.Open(); /* create table */ DbCommand command = con.CreateCommand(); command.CommandType = CommandType.Text; try ...
Hi, For a simple class like, class Person { String Name Double incomeFromWork = new Double(0.0) static constraints = { incomeFromWork(min:0d) } } However on the GSP page I get an "HTTP ERROR: 404" error when I enter alphabets for incomeFromWork value. What constraints should I use to accept a valid Double v...
I'm having the doubles imprecision problem with the common mathematical operations. It's the one where a simple addition would append a 00000000x to my double. I've read from another question that decimals should be used instead. But the app I'm using this for is statistics related and performance is an issue. I've read somewhere that...
%s is a string in printf, and %d is a decimal I thought...yet when putting in writer.printf("%d dollars is the balance of %s\r\n", bal, nm); ..an exception is thrown telling me that %d != lang.double. Ideas? ...
I've inherited a project in which monetary amounts use the double type. Worse, the framework it uses, and the framework's own classes, use double for money. The framework ORM also handles retrieval of values from (and storage to) the database. In the database money values are type number(19, 7), but the framework ORM maps them to dou...