if i don't specifically type a variable in my code will it compile as a default datatype? for example, the "for each ... in" function works best without typing the variable: for each (var element in myArray) { //process each element } does my element variable have a datatype? if it is typed as Object is it...
In C++, What are the random digits that are displayed after giving setprecision() for a floating point number? Note: After setting the fixed flag. example: float f1=3.14; cout < < fixed<<setprecision(10)<<f1<<endl; we get random numbers for the remaining 7 digits? But it is not the same case in double. ...
Hi I am pretty new to C. I recently came across this piece of code in C: #include <stdio.h> int main() { unsigned Abc = 1; signed Xyz = -1; if(Abc<Xyz) printf("Less"); else if(Abc>Xyz) printf("Great"); else if(Abc==Xyz) printf("Equal"); ...
What is the behavior of various systems when you have more than one copy of a particular program or library running, do string literals get stored once in RAM or once for every copy of the process/library? What if they are stored in an array like: static const char *const foo[] = { "bar", "baz", "buz" }; Does the static change the beh...
Hi all, I am using DBLinq to access a MySQL DB from C# .NET 3.5 I have created the dbml file for the Visual Studio 2010 ORM, and it loads fine - however when I compile the source I am met with errors regarding the conversion of MySQL timestamp to .NET DateTime. Now this kind of makes sense, because they are 2 'different' types (Though...
I am writing a function which is meant to take a character as an argument and return a character. Using String for this looks a bit strange for me. Should I, or there is something like a char type in Scala 2.8? ...
This question is closely related to this one but i think is more general. Recently i try to create type "instances" on the fly with multimethods (or with a unique function constructor if possible), based in a metadata tag. I linked a type (a java class under the hood) with this tag and then i didnt know how to continue in a elegant way ...
Lets say I have this class (just as an example): internal class Packet { private readonly UInt32 _length; private readonly Byte _type; private readonly UInt32 _requestId; } There are many different types of packets each of which inherit from this class and each packet type can have any number of properties of varying typ...
I am able to create JFormatted TextField that accepts only float values,but I am not able to fetch that value.... I am declaring it .. stopAppFormattedTextField = new javax.swing.JFormattedTextField(new DecimalFormat("#.00")); and fetching the value using : double stop=(Double)stopAppFormattedTextField.getValue(); but the above sta...
Hi, My table has few fields with an amount column of type decimal. This column will have either a deposited amount (a positive value) or a withdraw amount (a negative value). I store the positive value as just 120 and the negative value as -50. I sum the column and got the result as expected. Mysql version is: 5.1.33-community. When i ...
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 ...
I used the MySQL Migration Toolkit to migrate a SQL Server 2008 database to MySQL. However, it converted all my bit types to tinyint. My data model doesn't like this, because I have a bunch of expressions testing for true/false, and not 0-255. Is there a way to tell the Toolkit to convert these different, or some SQL I can run on the ne...
That is, why does unsigned short var= L'ÿ' work, but unsigned short var[]= L"ÿ"; does not? ...
I have just started learning C# and would have one question that I cannot find answer on. Maybe I am just searching something slightly different. Also on MSDN I found following: C# is a strongly typed language; therefore every variable and object must have a declared type. Data Types Overview. I am also reading a book for it an...
What would be the return type of the following method? (T) public T GetDirectoryContentsRecursively (string path) { ... } The method will read the contents of a remote directory, and read the contents of each sub-directory and each of that object's sub-directories and so on. I have thought about using List<object>, where object coul...
Hi All, Bit of a puzzler, I have a generic class public abstract class MyClass<T> : UserControl { } and I have got a type like this Type type = Type.GetType("Type From DB as String", true, true); and I want to create and instance of MyClass using the type... But this doesn't work. MyClass<type> control = (MyClass<type>)LoadCon...
hey people kindly tell me if the following declaration is correct? if it is then kindly explain typedef char HELLO[5]; HELLO name; now what datatype is name? [as in a character,integer etc] i came to know that name will be an array of strings but when i run the following programme i get error #include<stdio.h> typedef char HEL...
I am trying to take five character and 5 float input. main() { char c[5]; float q[5]; int i; for(i=0;i<5;i++) { printf("\n%d ",i); scanf("%c",c+i); scanf("%f",q+i); } } But the output is absurd. After two sequential scans, it skips third scan and then again skips fifth scan. I am not ab...
For clarity, if I'm using a language that implements IEE 754 floats and I declare: float f0 = 0.f; float f1 = 1.f; ...and then print them back out, I'll get 0.0000 and 1.0000 - exactly. But IEE 754 isn't capable of representing all the numbers along the real line. Close to zero, the 'gaps' are small; as you get further away, the gaps...
In PHP if you go above INT_MAX it will cast it as a float, allowing very high numbers to be formed (that are non-decimal as well), is this possible to do in C++ or are the way they store floating point/double precision numbers different? The reason why is I am wishing to benchmark large factorials, but something such as 80! is way too l...