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Round a double to 2 decimal places [duplicate]
...t.println(new BigDecimal("1.03").subtract(new BigDecimal("0.41")));
Some excellent further reading on the topic:
Item 48: "Avoid float and double if exact answers are required" in Effective Java (2nd ed) by Joshua Bloch
What Every Programmer Should Know About Floating-Point Arithmetic
If you...
snprintf and Visual Studio 2010
... the _s functions do use template magic to infer buffer sizes, and that is excellent.
– Bruce Dawson
Nov 22 '14 at 0:23
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HTML Form: Select-Option vs Datalist-Option
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Excellent answer!! Could you please explain your second bullet? What do you mean by "option groups to organize the display"? Thanks.
– Govind Rai
Sep 26 '16 at 6:34
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Java Singleton and Synchronization
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Excellent answer, though I didn't get some part of it. Can you elaborate "Further, the class loader guarantees that all static initialization is complete before you get access to the class - that's what gives you thread-safet...
CSS to stop text wrapping under image
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This is excellent for displaying code blocks that might have to contend with images or floating sidebars nearby.
– AlexMA
Apr 2 '14 at 2:24
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HTML character decoding in Objective-C / Cocoa Touch
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Dude, excellent functions. Your stringByDecodingXMLEntities method made my day! Thanks!
– Brian Moeskau
Jun 8 '10 at 6:41
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Generate URL in HTML helper
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Excellent approach because it reuses an existing object rather than creating a new one.
– Mike
Mar 11 '17 at 5:04
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How to add leading zeros?
...which can sometimes look like a number and which many applications such as Excel will corrupt and remove the leading 0s or convert them to scientific notation.
When I tried the answer provided by @metasequoia the vector returned had leading spaces and not 0s. This was the same problem mentioned by...
How to zip a whole folder using PHP
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Excellent solution. It works in laravel 5.5 too. really liked that. (y)
– Web Artisan
Nov 29 '17 at 6:46
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Force browser to download image files on click
...e browser to download the image files just as it does while clicking on an Excel sheet.
14 Answers
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