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Fully custom validation error message with Rails
...ssages can be set for a specific model+attribute, model, attribute, or globally.
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Is there a simple way to remove multiple spaces in a string?
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That's true, string.split also handles all kinds of whitespaces.
– Josh Lee
Oct 10 '09 at 7:55
7
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Rename a file in C#
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be really careful with this approach... if your destination directory and your source directory are the same, and the "newname" actually a case-sensitive version of "oldFileName", you will delete before you get a chance to move yo...
What is the 'instanceof' operator used for in Java?
... Dog is Dog
dog instanceof Object // true - Object is the parent type of all objects
However, with Object animal = new Animal();,
animal instanceof Dog // false
because Animal is a supertype of Dog and possibly less "refined".
And,
dog instanceof Cat // does not even compile!
This is beca...
How to identify CAAnimation within the animationDidStop delegate?
... where I had a series of overlapping CATransition / CAAnimation sequences, all of which I needed to perform custom operations when the animations stopped, but I only wanted one delegate handler for animationDidStop.
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How to set breakpoints in inline Javascript in Google Chrome?
When I open Developer Tools in Google Chrome, I see all kinds of features like Profiles, Timelines, and Audits, but basic functionality like being able to set breakpoints both in js files and within html and javascript code is missing! I tried to use the javascript console, which itself is buggy - f...
CSS3 gradient background set on body doesn't stretch but instead repeats?
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I know I'm late to the party, but here's a more solid answer.
All you need to do is use min-height: 100%; rather than height: 100%; and your gradient background will extend the entire height of the viewport without repeating, even if the content is scrollable.
Like this:
html {
mi...
ASP.NET MVC How to convert ModelState errors to json
How do you get a list of all ModelState error messages? I found this code to get all the keys:
( Returning a list of keys with ModelState errors )
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async/await - when to return a Task vs void?
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1) Normally, you would want to return a Task. The main exception should be when you need to have a void return type (for events). If there's no reason to disallow having the caller await your task, why disallow it?
2) async methods...
Explain “claims-based authentication” to a 5-year-old
...n the ID is valid, and the ID is for the person requesting the drink. For all intents and purposes, the bartender (or application) doesn't really care how the authentication occurred because of the trust. The bartender knows nothing about you except your date of birth because that's all the barten...