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HTML character decoding in Objective-C / Cocoa Touch

First of all, I found this: Objective C HTML escape/unescape , but it doesn't work for me. 13 Answers ...
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Which is faster : if (bool) or if(int)?

The above topic made me do some experiments with bool and int in if condition. So just out of curiosity I wrote this program: ...
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How to call a Parent Class's method from Child Class in Python?

When creating a simple object hierarchy in Python, I'd like to be able to invoke methods of the parent class from a derived class. In Perl and Java, there is a keyword for this ( super ). In Perl, I might do this: ...
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Excel “External table is not in the expected format.”

I'm trying to read an Excel (xlsx) file using the code shown below. I get an "External table is not in the expected format." error unless I have the file already open in Excel. In other words, I have to open the file in Excel first before I can read if from my C# program. The xlsx file is on a share...
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How can I replace a newline (\n) using sed?

How can I replace a newline (" \n ") with a space (" ") using the sed command? 42 Answers ...
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What's better at freeing memory with PHP: unset() or $var = null

I realise the second one avoids the overhead of a function call ( update , is actually a language construct), but it would be interesting to know if one is better than the other. I have been using unset() for most of my coding, but I've recently looked through a few respectable classes found off t...
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in a “using” block is a SqlConnection closed on return or exception?

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How do I install pip on macOS or OS X?

I spent most of the day yesterday searching for a clear answer for installing pip (package manager for Python). I can't find a good solution. ...
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Mutable vs immutable objects

I'm trying to get my head around mutable vs immutable objects. Using mutable objects gets a lot of bad press (e.g. returning an array of strings from a method) but I'm having trouble understanding what the negative impacts are of this. What are the best practices around using mutable objects? Should...
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Reset/remove CSS styles for element only

I'm sure this must have been mentioned/asked before but have been searching for an age with no luck, my terminology must be wrong! ...