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Scala: join an iterable of strings
...,"): String = list match { case head :: tail => tail.foldLeft(head)(_ + delim + _) case Nil => "" }
– Davos
Jul 11 '17 at 14:37
2
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CSS: Change image src on img:hover
... <img src="https://cdn4.iconfinder.com/data/icons/imoticons/105/imoticon_15-128.png" />
<img src="https://cdn4.iconfinder.com/data/icons/imoticons/105/imoticon_12-128.png" />
</a>
CSS
a img:last-child {
display: none;
}
a:hover img:last-child {
display: block;
}
a:ho...
Best practice to return errors in ASP.NET Web API
...m back as most exceptions are usually due to incorrect parameters or calls etc.
An example in my app is that sometimes the client will ask for data, but there isn't any data available so I throw a custom NoDataAvailableException and let it bubble to the Web API app, where then in my custom filter w...
How to select bottom most rows?
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This and other answers work fine when you're working on smaller tables. I don't think it's worth ordering the entire table by a column when you are just interested in the bottom few rows.
– steadyfish
Oct 13 '14 at 16:09
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Is an array name a pointer?
...d in B a was a separate pointer object from the array elements a[0], a[1], etc. Ritchie wanted to keep B's array semantics, but he didn't want to mess with storing the separate pointer object. So he got rid of it. Instead, the compiler will convert array expressions to pointer expressions during ...
Modify UIImage renderingMode from a storyboard/xib file
...er it's used rather than just in one interface builder file, but in almost all cases (that I've encountered) this is the behavior you want.
A few things to note:
The image color will not appear to have changed in interface builder (as of Xcode 6.1.1) but will work when the application is run.
I...
How can I know which radio button is selected via jQuery?
...before needed blah blah ) but for pure performance this works faster especially in older browsers: $("#myform").find("input[type='radio']:checked").val();
– Mark Schultheiss
Aug 3 '15 at 4:45
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Convert a String representation of a Dictionary to a dictionary?
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Starting in Python 2.6 you can use the built-in ast.literal_eval:
>>> import ast
>>> ast.literal_eval("{'muffin' : 'lolz', 'foo' : 'kitty'}")
{'muffin': 'lolz', 'foo': 'kitty'}
This is safer than using eval. As its own docs say:
>>> help(ast.literal_e...
jQuery - Create hidden form element on the fly
... seems the "id" need to be generated dynamically something like foo1, foo2 etc
– Web_Developer
Oct 1 '18 at 8:00
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spring scoped proxy bean
...erPreferences instance) and that is smart enough to be able to go off and fetch the real UserPreferences object from whatever underlying scoping mechanism we have chosen (HTTP request, Session, etc.). We can then safely inject this proxy object into the 'userManager' bean, which will be blissfully u...