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Truncate Two decimal places without rounding

Lets say I have a value of 3.4679 and want 3.46, how can I truncate to two decimal places that without rounding up? 21 Answ...
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How do I catch a PHP fatal (`E_ERROR`) error?

I can use set_error_handler() to catch most PHP errors, but it doesn't work for fatal ( E_ERROR ) errors, such as calling a function that doesn't exist. Is there another way to catch these errors? ...
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Do subclasses inherit private fields?

This is an interview question. 19 Answers 19 ...
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Merging dictionaries in C#

What's the best way to merge 2 or more dictionaries ( Dictionary<T1,T2> ) in C#? (3.0 features like LINQ are fine). 2...
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Download file of any type in Asp.Net MVC using FileResult?

I've had it suggested to me that I should use FileResult to allow users to download files from my Asp.Net MVC application. But the only examples of this I can find always has to do with image files (specifying content type image/jpeg). ...
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Check if PHP session has already started

I have a PHP file that is sometimes called from a page that has started a session and sometimes from a page that doesn't have session started. Therefore when I have session_start() on this script I sometimes get the error message for "session already started". For that I've put these lines: ...
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onIabPurchaseFinished never called.

I've been trying to set up in-app billing for my first app, and have been using the android.test.purchased sku. The purchase come through, and I manage to get the SKU into my inventory, but, as the title says, onIabPurchaseFinished, is never called. ...
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How to check if a service is running on Android?

How do I check if a background service is running? 31 Answers 31 ...
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Sound effects in JavaScript / HTML5

I'm using HTML5 to program games; the obstacle I've run into now is how to play sound effects. 18 Answers ...
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How do I remove all non alphanumeric characters from a string except dash?

How do I remove all non alphanumeric characters from a string except dash and space characters? 13 Answers ...