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Argparse: Required arguments listed under “optional arguments”?

I use the following simple code to parse some arguments; note that one of them is required. Unfortunately, when the user runs the script without providing the argument, the displayed usage/help text does not indicate that there is a non-optional argument, which I find very confusing. How can I get p...
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Efficiency of Java “Double Brace Initialization”?

In Hidden Features of Java the top answer mentions Double Brace Initialization , with a very enticing syntax: 15 Answe...
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Why isn't ProjectName-Prefix.pch created automatically in Xcode 6?

Why isn't ProjectName-Prefix.pch created automatically in Xcode 6 ? 8 Answers 8 ...
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Bulk Insertion in Laravel using eloquent ORM

How can we perform bulk database insertions in Laravel using Eloquent ORM? 11 Answers ...
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Create subdomains on the fly with .htaccess (PHP)

I am looking to create a system which on signup will create a subdomain on my website for the users account area. 9 Answer...
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Can jQuery get all CSS styles associated with an element?

Is there a way in jQuery to get all CSS from an existing element and apply it to another without listing them all? 5 Answer...
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iOS Detect 3G or WiFi

I am not sure if this is possible, but I have this scenario. 10 Answers 10 ...
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C++ display stack trace on exception

I want to have a way to report the stack trace to the user if an exception is thrown. What is the best way to do this? Does it take huge amounts of extra code? ...
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How to store printStackTrace into a string [duplicate]

How can I get the e.printStackTrace() and store it into a String variable? I want to use the string generated by e.printStackTrace() later in my program. ...
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What is the most efficient string concatenation method in python?

Is there any efficient mass string concatenation method in Python (like StringBuilder in C# or StringBuffer in Java)? I found following methods here : ...