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Junit difference between assertEquals(Double, Double) and assertEquals(double, double, delta)
Category : Programming Languages

I had a junit test asserting two Double objects with the following:


Assert.assertEquals(Double expected, Double result);

This was was fine then I decided to change it to use the primitive double instead which turned out to be deprecated unless you also provide a delta.


so what I am wondering is what is the difference between using the Double objec


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Does Interlocked.CompareExchange(double,double,double) work in 32 bit OS?
Category : Programming Languages

I'm maintaining a high performance class that can be operated on by multiple threads. Many of the fields are volatile ints, and as it turns out I need to upgrade one of those to a double. I'm curious if there is a lock free way to do this, and was wondering if the Interlocked.CompareExchange(double, double, double) works as advertised on a 32-bit OS, or are torn reads a problem.


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Java Cast from Object[] to double[] array and Double[] to double[] array
Category : Coding

Is there a way to cast an Object[] array into double[] array without using any loops. And cast Double[] array to double[] array


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Joining a Double Base Chain Stitch to Form a Double-Loop Crochet
Category : Hobbies, Games & Toys
A double base chain stitch is the foundation stitch for a crochet project. Unlike a regular base chain stitch, the double base chain stitch offers more flexibility in the yarn; it’s also easier to work the next stitch into this kind of chain. A double loop stitch in crochet makes little loops on the outside of your crochet to create a three-dimensional feel to the piece and to give it added

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How Do I define a Double Brackets/Double Iterator Operator, Similar to Vector of Vectors'?
Category : Programming Languages

I'm porting code that uses a very large array of floats, which may trigger malloc failures from c to c++. I asked a question about whether I should use vectors or deques and Niki Yoshiuchi generously offered me this example of a safely wrapped type:


template<typename T>
class VectorDeque
{
private:
enum TYPE { NONE, DEQUE, VECTOR };
std::deque&

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How to replace two double quotes with a single double quote in Java String?
Category : Java

I am reading a CSV file and have some values like


field 1 field 2 field 3
1 test case1 expecting one, and "two", and three

after reading file into a StringBuilder and converting toString() I split the file content by: string.split(",(?=([^"]*"[^"]*")*[^"]*$)");.


On iterating t


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mvc4 web api - treating uint/int/enum as long, float/double as double
Category : Programming Languages

I have a task of creating RESTfull Services using ASP.NET MVC4 Web API. One of the Service Method is looking like below:


[HttpPost]
public HttpResponseMessage TagAdd([FromBody] Tag tag)
{
HttpResponseMessage result;
Tag tmpTag = new Tag();
tmpTag.Name = tag.Name;
tmpTag.DataType = tag.DataType;
}

Here Tag lookin


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How do I replace double quotes within csv fields but not add a trailing double quote to each line?
Category : Programming Languages

I have a csv file named data_export_20130206-F.csv. It contains data that contains double quotes (") which is making it very messy to parse.


File looks kind of like this (but with more fields)


"stuff","zipcode"
"<?xml version="1.0" encoding="utf-8" ?>","90210"

I want to "escape" the quotes that are within the fields so it will look lik


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Converting String to double in java. Change format of printed double
Category : Java

I am reading a following CSV file in java and


1191196800.681 - !AIVDM,1,1,,,13aG?N0rh20E6sjN1J=9d4<00000,0*1D

Here is my code to read this CSV file and convert the 1st column of the CSV file (which is a String) to a double


public class ReadCSV {
public static void main(String[] args) {
try {
BufferedReader CSVFile

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conversion from string to double with number greater than std::numeric_limit<double>::digits10
Category : Programming Languages
std::string str = "12345679012.124678";
double back = boost::lexical_cast<double>( str );
std::string str2 =boost::lexical_cast<std::string>( back );
//here str2 is equal to str

Is it normal that there is no loss here (i.e final string = orignal string) even if number's significand digits is greater than std::numeric_limit<double>::


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