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Javascript roundoff number to nearest 0.5

... Here's a more generic solution that may be useful to you: function round(value, step) { step || (step = 1.0); var inv = 1.0 / step; return Math.round(value * inv) / inv; } round(2.74, 0.1) = 2.7 round(2.74, 0.25) = 2.7...
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How to comment lines in rails html.erb files? [duplicate]

...comment_block helper function would be awesome. Maybe when I gain a little more experience with Rails (I'm pretty new), I will create a pull request – Daniel Waltrip Oct 16 '13 at 7:26 ...
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In C#, what happens when you call an extension method on a null object?

...'t mean it's right, and as Binary Worrier mentioned below, it looks to me more like an aberration to say the least. – Trap May 11 '09 at 9:56 3 ...
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Parsing huge logfiles in Node.js - read in line-by-line

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Design Pattern for Undo Engine

...r stuff). The UI for that might be a little unwieldy but it would be much more powerful than a traditional linear undo. – Sumudu Fernando Apr 29 '12 at 6:22 ...
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Best way to create custom config options for my Rails app?

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How to convert a PNG image to a SVG? [closed]

...e result : cpp-frug.github.io/images/Cpp-President-2017.svg Please explain more about your target. What do you want / wonder ? What is your need / wish ? Cheers ;-) – olibre Jul 29 '16 at 8:41 ...
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SQL Server: Query fast, but slow from procedure

...cal Variables" in your stored procedure queries, but read the original for more understanding, it's a great write up. e.g. Slow way: CREATE PROCEDURE GetOrderForCustomers(@CustID varchar(20)) AS BEGIN SELECT * FROM orders WHERE customerid = @CustID END Fast way: CREATE PROCEDURE Ge...
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Why does comparing strings using either '==' or 'is' sometimes produce a different result?

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Java NIO FileChannel versus FileOutputstream performance / usefulness

... level, also many times the FileChannel way is slower. Can I please know more details comparing these two methods. Here is the code I used, the file that I am testing with is around 350MB . Is it a good option to use NIO based classes for File I/O, if I am not looking at random access or other su...