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What is the AppDelegate for and how do I know when to use it?
I'm just beginning to work on iPhone apps. How do I know when I should be putting stuff in AppDelegate versus a custom class? Is there a rule or any type of analogy with another programming language like Python or PHP that uses an AppDelegate like pattern?
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Cross-browser custom styling for file upload button [duplicate]
I'm trying to style a file upload button to my personal preferences, but I couldn't find any really solid ways to do this without JS. I did find two other questions about this subject, but the answers there either involved JavaScript, or suggested Quirksmode's approach .
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Deep null checking, is there a better way?
Note: This question was asked before the introduction of the .? operator in C# 6 / Visual Studio 2015 .
16 Answers
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In Markdown, what is the best way to link to a fragment of a page, i.e. #some_id?
...will mess up the layout for many renderers.
(I have changed id= to name= above. See this answer for the tedious explanation.)
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HTTPS with Visual Studio's built-in ASP.NET Development Server
Is there a way to access Visual Studio's built-in ASP.NET Development Server over HTTPS?
4 Answers
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How to 'bulk update' with Django?
I'd like to update a table with Django - something like this in raw SQL:
5 Answers
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Emulating a do-while loop in Bash
What is the best way to emulate a do-while loop in Bash?
4 Answers
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Why is “Set as Startup” option stored in the suo file and not the sln file?
It seems like this setting should be stored in the solution file so it's shared across all users and part of source code control. Since we don't check in the suo file, each user has to set this separately which seems strange.
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Why java.lang.Object is not abstract? [duplicate]
Why is the Object class, which is base class of 'em all in Java, not abstract?
14 Answers
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Perl flags -pe, -pi, -p, -w, -d, -i, -t?
...difficult for looking up punctuation and, unfortunately, Perl does seem to be mostly made up of punctuation :-)
The command line switches are all detailed in perlrun. (available from the command line by calling perldoc perlrun)
Going into the options briefly, one-by-one:
-p: Places a printing lo...