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Asked: 2026-05-20T11:23:21+00:00

This is, at least for me, most bizzare Visual Studio 2010 behaviour ever. I’m

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This is, at least for me, most bizzare Visual Studio 2010 behaviour ever. I’m working on MVC3 project, I copied a line of code from another project (VS2010 also, MVC1 if it matters) which looks like this:

target_height = height * 1.1

when I paste it into MVC3 project, it gets expanded to 

target_height = height * 1.1000000000000001

Now, if I type 1.2, it’s fine, nothing happens, but if I type 1.12 it is expanded to 1.1200000000000001.

Both target_height and height are integers. Why does one Visual Studio display 1.1 while other expands it to 1.1000000000000001?

What is going on???

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1 Answer

  1. Editorial Team

    I think it is autocomplete went crazy and started fixing floating points constant into “allowed” values. As written in http://accessmvp.com/Strive4Peace/VBA/VBA_L1_02_Crystal.pdf , VB autocomplete really tries to offer only “things that apply specifically to that data type”. int * double is understandably not truncated into int * int (automatic conversions always happen only as needed) and what you see is double representation of 1.1 or 1.12 (epsilon = 1.11e-16).

    I think it would still need some further checking or verification to learn exact conditions when this happens, but as I am not using VB.NET or MVCx this is not something I am willing to do.

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