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How do I define and use an ENUM in Objective-C?
I declared an enum in my implementation file as shown below, and declared a variable of that type in my interface as PlayerState thePlayerState; and used the variable in my methods. But I am getting errors stating that it is undeclared. How do I correctly declare and use a variable of type PlayerSta...
Where to define custom error types in Ruby and/or Rails?
...ou define exceptions in this way:
gem_dir/lib/gem_name/exceptions.rb
and defined as:
module GemName
class AuthenticationError < StandardError; end
class InvalidUsername < AuthenticationError; end
end
an example of this would be something like this in httparty
For Ruby on Rails
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difference between throw and throw new Exception()
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throw; rethrows the original exception and preserves its original stack trace.
throw ex; throws the original exception but resets the stack trace, destroying all stack trace information until your catch block.
NEVER write throw ex;
throw new Exception(ex.Message...
How to maintain aspect ratio using HTML IMG tag
...tag of HTML to show a photo in our application. I have set both its height and width attribute to 64. I need to show any image resolution (e.g. 256x256, 1024x768, 500x400, 205x246, etc.) as 64x64. But by setting the height and width attributes of an img tag to 64, it's not maintaining the aspect rat...
Creating Unicode character from its number
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That's why I said 'below'! And I need to emphasise that, despite the fact that Java chars only go up to 0xffff, Unicode code points go up to 0xfffff. The Unicode standard got changed after Java was designed. These days Java chars technically hold UTF-1...
How do I get an animated gif to work in WPF?
...Gif
You can install it with NuGet
PM> Install-Package WpfAnimatedGif
and to use it, at a new namespace to the Window where you want to add the gif image and use it as below
<Window x:Class="MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http:...
How to declare a global variable in a .js file
...Jun 3 '09 at 11:48
PatrikAkerstrandPatrikAkerstrand
42.6k1111 gold badges7272 silver badges9292 bronze badges
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'POCO' definition
... someone define what exactly 'POCO' means? I am encountering the term more and more often, and I'm wondering if it is only about plain classes or it means something more?
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How do I undo 'git add' before commit?
I mistakenly added files to Git using the command:
36 Answers
36
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Check whether HTML element has scrollbars
... fails in many cases. If your element has overflow: visible; width: 200px; and has a child with a 500px width, your element has no scroll bars but has a scrollWidth of 500px and a clientWidth of 200px.
– Joseph Lennox
Mar 5 '14 at 21:17
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