int

问题 I'm having some problem with one of the functions which I'm new at, it's the fromIntegral function. Basically I need to take in two Int arguments and return the percentage of the numbers but when I run my code, it keeps giving me this error: Code: percent :: Int -> Int -> Float percent x y = 100 * ( a `div` b ) where a = fromIntegral x :: Float b = fromIntegral y :: Float Error: No instance for (Integral Float) arising from a use of `div' Possible fix: add an instance declaration for

问题 mysql> SELECT FROM_UNIXTIME(2145916799), FROM_UNIXTIME(2145916800), POW(2,32-1)-1, 2145916799 - POW(2,32-1)-1; +---------------------------+---------------------------+---------------+----------------------------+ | FROM_UNIXTIME(2145916799) | FROM_UNIXTIME(2145916800) | POW(2,32-1)-1 | 2145916799 - POW(2,32-1)-1 | +---------------------------+---------------------------+---------------+----------------------------+ | 2037-12-31 18:59:59 | NULL | 2147483647 | -1566850 | +---------------------

问题 Im writing some MIPS code to take a string of ASCII digits and convert the string into an integer. The string is entered by the user and can be at most 10 digits in length. My code works fine and uses the obvious method of performing looped addition after multiplying the Least Significant number in the string by a power of ten determined by the index of the array, starting from the last digit entered (10^0) to the first digit entered (10^n, n=number of digits in the array). I was wondering if

问题 Im writing some MIPS code to take a string of ASCII digits and convert the string into an integer. The string is entered by the user and can be at most 10 digits in length. My code works fine and uses the obvious method of performing looped addition after multiplying the Least Significant number in the string by a power of ten determined by the index of the array, starting from the last digit entered (10^0) to the first digit entered (10^n, n=number of digits in the array). I was wondering if

问题 I'm working with .NET strongly-typed datasets and have a table with a nullable int column (and a nullable DateTime column as well). Apparently there is a bug with the dataset designer that prevents having nullable columns on these data types. The designer only allows "throw exception" as the default behavior for null values. Unfortunately, when using a nullable data type in the database, a null value IS a legitimate value but results in a thrown exception when attempting to retrieve this

问题 I'm trying to run a stored procedure that is requiring an int to work correctly. I pull an "ID" from a datagrid and then am trying to parse the int to allow the procedure to run, but am getting the error mentioned in the title. Any thoughts on a better way to do this? <asp:BoundColumn DataField="ID" Visible="true"></asp:BoundColumn> <asp:Button ID="btnMarkComplete" Text="Mark Complete" runat="server" CommandArgument='<$# Eval("ID") %>' OnClick="BtnMarkCompleteClick"/> </ItemTemplate> int iD =

问题 I send a int in a NSData like this: NSData* dataLength = [[NSData alloc] initWithBytes:&theInt length:sizeof(theInt)]; then in java side, I get a int like this: int theInt = aInputStreamOfSocket.readInt(); but the value changed! In my case, I send 1225516 and get 749933056 what's the problem? 回答1: Your trouble is a difference in endianness. Intel based processors use little-endian byte order while network based transports are almost always big-endian. Java thus expects big-endian for readInt(

问题 How can I assign a integer and float values given by user to a variable or array without using scanf() ? Like we have getchar , fgetc , fgets ...etc for char and string , Is there any function for floats and integers ? 回答1: There aren't functions to read integers and floats but you can use fgets with strtol for integers and strtof for floats: // floats: char str_f[20]; float f; fgets (str_f, 20, stdin); f = strtof(str_f, NULL); // integers: char str_i[20]; int i; fgets(str_i, 20, stdin); i =

问题 I have a string that I have to convert into int or float depending or the case : What I have => What I want "548189848.54" => 548189848.54 "548189848.50" => 548189848.5 "548189848.00" => 548189848 Is it possible to do it ? Thanks, Steve 回答1: Here's a one line that should do it. numbers = ["548189848.54", "548189848.50", "548189848.00"] result = [int(float(x)) if int(float(x)) == float(x) else float(x) for x in numbers] Gives output: print result [548189848.54, 548189848.5, 548189848] 回答2:

问题 In my code I need create a Bitmap using double values. It´s important use the correct value. I´m using: Bitmap bmp = Bitmap.createBitmap(int, int, Bitmap.Config.ARGB_8888); ... When i would need something like: Bitmap bmp = Bitmap.createBitmap(double, double, Bitmap.Config.ARGB_8888); Everything I've trying to make the conversion ( possible ? ) Only returns the initial value or integer How I can use double values ​​when creating the bitmap? 回答1: Perhaps I misunderstand the question, but