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Editing dictionary values in a foreach loop

I am trying to build a pie chart from a dictionary. Before I display the pie chart, I want to tidy up the data. I'm removing any pie slices that would be less than 5% of the pie and putting them in a "Other" pie slice. However I'm getting a Collection was modified; enumeration operation may not exe...
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How to get the first element of an array?

How do you get the first element from an array like this: 31 Answers 31 ...
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Common MySQL fields and their appropriate data types

I am setting up a very small MySQL database that stores, first name, last name, email and phone number and am struggling to find the 'perfect' datatype for each field. I know there is no such thing as a perfect answer, but there must be some sort of common convention for commonly used fields such as...
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parseInt vs unary plus, when to use which?

What are the differences between this line: 5 Answers 5 ...
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How to validate date with format “mm/dd/yyyy” in JavaScript?

I want to validate the date format on an input using the format mm/dd/yyyy . 19 Answers ...
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how to find host name from IP with out login to the host

i need to find the host name of a UNIX host whose IP is known with out login to that UNIX host 11 Answers ...
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Getting current date and time in JavaScript

I have a script that prints the current date and time in JavaScript, but the DATE is always wrong. Here is the code: 27 A...
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Why #define TRUE (1==1) in a C boolean macro instead of simply as 1?

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How to round to 2 decimals with Python?

I am getting a lot of decimals in the output of this code (Fahrenheit to Celsius converter). 16 Answers ...
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How is “=default” different from “{}” for default constructor and destructor?

I originally posted this as a question only about destructors, but now I'm adding consideration of the default constructor. Here's the original question: ...