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Best practices/performance: mixing StringBuilder.append with String.concat

I'm trying to understand what the best practice is and why for concatenating string literals and variables for different cases. For instance, if I have code like this ...
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Python code to remove HTML tags from a string [duplicate]

I have a text like this: 5 Answers 5 ...
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How to establish a connection pool in JDBC?

Can anybody provide examples or links on how to establish a JDBC connection pool? 13 Answers ...
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Overload with different return type in Java?

Why is it not possible to overload a function just by changing the return type? Will that change in a future version of Java? ...
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Make JQuery UI Dialog automatically grow or shrink to fit its contents

I have a JQuery UI dialog popup that displays a form. By selecting certain options on the form new options will appear in the form causing it to grow taller. This can lead to a scenario where the main page has a scrollbar and the JQuery UI dialog has a scrollbar. This two-scrollbar scenario is un...
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Delete all rows in an HTML table

How can I delete all rows of an HTML table except the <th> 's using Javascript, and without looping through all the rows in the table? I have a very huge table and I don't want to freeze the UI while I'm looping through the rows to delete them ...
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What is the C# equivalent of NaN or IsNumeric?

What is the most efficient way of testing an input string whether it contains a numeric value (or conversely Not A Number)? I guess I can use Double.Parse or a regex (see below) but I was wondering if there is some built in way to do this, such as javascript's NaN() or IsNumeric() (was that VB...
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Is it possible to set code behind a resource dictionary in WPF for event handling?

Is it possible to set code behind a resource dictionary in WPF. For example in a usercontrol for a button you declare it in XAML. The event handling code for the button click is done in the code file behind the control. If I was to create a data template with a button how can I write the event handl...
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How to sort Map values by key in Java?

I have a Map that has strings for both keys and values. 15 Answers 15 ...
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Duplicate log output when using Python logging module

I am using python logger. The following is my code: 14 Answers 14 ...