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Maintain/Save/Restore scroll position when returning to a ListView
...ain, I want the list to be scrolled to the same point that it was previously. Any ideas on how to achieve this?
20 Answers
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What's an appropriate HTTP status code to return by a REST API service for a validation failure?
I'm currently returning 401 Unauthorized whenever I encounter a validation failure in my Django / Piston based REST API application.
Having had a look at the HTTP Status Code Registry
I'm not convinced that this is an appropriate code for a validation failure, what do y'all recommend?
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How can I set the color of a selected row in DataGrid
... of a selected row in DataGrid is so dark that I can't read it. Is there anyway of overriding it?
8 Answers
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Append value to empty vector in R?
I'm trying to learn R and I can't figure out how to append to a list.
8 Answers
8
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“Wrong type argument: commandp” error when binding a lambda to a key
I am getting a "Wrong type argument: commandp, (lambda nil (forward-line 5))" here.
3 Answers
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Does Ruby regular expression have a not match operator like “!~” in Perl?
I just want to know whether ruby regex has a not match operator just like !~ in perl. I feel it's inconvenient to use (?!xxx) or (?<!xxxx) because you cannot use regex patterns in the xxx part.
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Understand homebrew and keg-only dependencies
I've recently started using homebrew, and I'm a bit confused as to what happens when I brew something onto my system, but its brewed dependencies are keg-only, meaning that they are linked under /usr/local .
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How do you render primitives as wireframes in OpenGL?
How do you render primitives as wireframes in OpenGL?
10 Answers
10
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How to install ia32-libs in Ubuntu 14.04 LTS (Trusty Tahr)
I installed Ubuntu 14.04 (Trusty Tahr) yesterday. Everything seems OK. But when I tried to compile some C code, I encounter the following error. The error seems to be due to the OS lacking the 32-bit architecture support. The error output is as following:
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What is the difference between Scala's case class and class?
...n Google to find the differences between a case class and a class . Everyone mentions that when you want to do pattern matching on the class, use case class. Otherwise use classes and also mentioning some extra perks like equals and hash code overriding. But are these the only reasons why one sho...