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Visual Studio uses "/" instead of "." to separate float and double numbers


Visual Studio uses "/" instead of "." to separate float and double numbers

By : user3042775
Date : November 29 2020, 12:01 PM
this will help Using Convert.ToSingle will attempt to convert an object to a floating-point number based on the system's region settings, as you have already noticed.
In order to reliably convert a string that is, for example, in US-English format, you can provide an additional argument of the type IFormatProvider to the method.
code :
string text = "3.5";
IFormatProvider culture = System.Globalization.CultureInfo.GetCultureInfo("en-US");
float number = Convert.ToSingle(text, culture);


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Floating point numbers of Python "float" and PostgreSQL "double precision"

Floating point numbers of Python "float" and PostgreSQL "double precision"


By : ATUL PANDEY
Date : March 29 2020, 07:55 AM
Any of those help The value float('1e-310') is a denormal number which is outside the usual range of exponents for 53-bit floats (+308 to -308) so it is stored with less precision in order to achieve gradual underflow.
It seems the PostgreSQL has some unresolved issues with denormals: http://archives.postgresql.org/pgsql-hackers/2011-06/msg00885.php
code :
>>> round(float('1e-302'), 308)
1e-302
>>> round(float('1e-310'), 308)
0.0
How can I turn "Object Browser" to "Metadata" for "Go to definition" in Visual Studio 2010

How can I turn "Object Browser" to "Metadata" for "Go to definition" in Visual Studio 2010


By : Александр Черножуков
Date : March 29 2020, 07:55 AM
this will help Under ReSharper > Options > Tools > External Sources, select Default Visual Studio navigation (or "Navigation to Sources" for a wider set of navigation options incl. decompilation and fetching stuff from symbol servers)
Why is "long double" type of a variable producing absurd output while "float" and "double"

Why is "long double" type of a variable producing absurd output while "float" and "double"


By : Amine El haouss
Date : March 29 2020, 07:55 AM
it helps some times Because you're using the wrong format specifier to print it out. float and double are passed as double to the printf() function (due to default promotion rules applying to it since it's variadic), but long double is passed as long double, and you have to use the %Lf conversion specifier for it, else your program invokes undefined behavior.
How does the "complex" macro modify the "double" and "float" types in C?

How does the "complex" macro modify the "double" and "float" types in C?


By : user3383926
Date : March 29 2020, 07:55 AM
I wish this help you Starting with C99, _Complex is a keyword, part of the core language. Syntactically it's a type specifier, like long or unsigned. It can be used along with any of float, double, or long double.
Thus _Complex double is a type, built into the language.
Getting this error: "Conversion from string "" to type 'Double' is not valid." visual studio

Getting this error: "Conversion from string "" to type 'Double' is not valid." visual studio


By : MickD
Date : March 29 2020, 07:55 AM
this will help The proper solution to this problem is to use the correct operator. You are trying to perform string concatenation but you are using the addition operator. This:
code :
"Espresso" + vbTab + vbTab + espresso.Value.ToString + vbTab + espressototal + Environment.NewLine
"Espresso" & vbTab & vbTab & espresso.Value.ToString & vbTab & espressototal & Environment.NewLine
receipt.AppendText(String.Concat("Espresso", vbTab, vbTab, espresso.Value, vbTab, espressototal, Environment.NewLine)
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