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Why is a round-trip conversion via a string not safe for a double?

...ng .NET 4.5.1 (x64), running the following console app which uses my DoubleConverter class.DoubleConverter.ToExactString shows the exact value represented by a double: using System; class Test { static void Main() { double d1 = 0.84551240822557006; string s = d1.ToString("r...
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How to create a custom-shaped bitmap marker with Android map API v2 [duplicate]

...e get the latitude , longitude and url form the web service , then how to convert the url into bitmap in it so fast – Rishi Gautam Apr 26 '13 at 10:13 ...
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Where is the itoa function in Linux?

itoa() is a really handy function to convert a number to a string. Linux does not seem to have itoa() , is there an equivalent function or do I have to use sprintf(str, "%d", num) ? ...
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Function passed as template argument

...code. So the instantiated code for do_op with fadd looks something like: convert a and b from int to float. call the function ptr op with float a and float b. convert the result back to int and return it. By comparison, our by-value case requires an exact match on the function arguments. ...
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How to round a number to n decimal places in Java

What I would like is a method to convert a double to a string which rounds using the half-up method - i.e. if the decimal to be rounded is 5, it always rounds up to the next number. This is the standard method of rounding most people expect in most situations. ...
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How to convert float to varchar in SQL Server

I have a float column with numbers of different length and I'm trying to convert them to varchar. 15 Answers ...
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Hidden Features of C#? [closed]

...'ve always wondered why he does that because I feel it's more "natural" to convert to lowercase first. After reading the book now I know why. share answered Aug 15 '08 at 11:0...
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Identify if a string is a number

...(object Expression) { double retNum; bool isNum = Double.TryParse(Convert.ToString(Expression), System.Globalization.NumberStyles.Any, System.Globalization.NumberFormatInfo.InvariantInfo, out retNum); return isNum; } But you can also use; bool b1 = Microsoft.VisualBasic.Information.I...
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What is the type of lambda when deduced with “auto” in C++11?

...(). A lambda which captures no variables (nothing inside the []'s) can be converted into a function pointer (MSVC2010 doesn't support this, if that's your compiler, but this conversion is part of the standard). But the actual type of the lambda isn't a function pointer. It's some unspecified funct...
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From Arraylist to Array

I want to know if it is safe/advisable to convert from ArrayList to Array? I have a text file with each line a string: 9 An...