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initializing a Guava ImmutableMap
Guava offers a nice shortcut for initializing a map. However I get the following compiler error (Eclipse Indigo) when my map initializes to nine entries.
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Scala: What is the difference between Traversable and Iterable traits in Scala collections?
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To put it simply, iterators keep state, traversables don't.
A Traversable has one abstract method: foreach. When you call foreach, the collection will feed the passed function all the elements it keeps, one after the other.
On the other hand, an I...
How do I refresh the page in ASP.NET? (Let it reload itself by code)
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Once the page is rendered to the client you have only two ways of forcing a refresh.
One is Javascript
setTimeout("location.reload(true);", timeout);
The second is a Meta tag:
<meta http-equiv="refresh" content="600">
You can set the refresh intervals on the server side.
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Generate JSON string from NSDictionary in iOS
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Here are categories for NSArray and NSDictionary to make this super-easy. I've added an option for pretty-print (newlines and tabs to make easier to read).
@interface NSDictionary (BVJSONString)
-(NSString*) bv_jsonStringWithPrettyPrint:(...
How to turn NaN from parseInt into 0 for an empty string?
...r num = parseInt(s) || 0;
When not used with boolean values, the logical OR (||) operator returns the first expression (parseInt(s)) if it can be evaluated to true, otherwise it returns the second expression (0). The return value of parseInt('') is NaN. NaN evaluates to false, so num ends up being...
Java Enum Methods - return opposite direction enum
...d that returns the opposite direction (the following is not syntactically correct, i.e, enums cannot be instantiated, but it illustrates my point). Is this possible in Java?
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Naming convention for utility classes in Java
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Like many such conventions, what's important is not so much what convention you use, as that you use it consistently. Like, if you have three utility classes and you call them CustomerUtil, ProductUtils, and StoreUtility, other people trying to use your classes a...
Why does document.querySelectorAll return a StaticNodeList rather than a real Array?
It bugs me that I can't just do document.querySelectorAll(...).map(...) even in Firefox 3.6, and I still can't find an answer, so I thought I'd cross-post on SO the question from this blog:
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Update Git branches from master
...have two options:
The first is a merge, but this creates an extra commit for the merge.
Checkout each branch:
git checkout b1
Then merge:
git merge origin/master
Then push:
git push origin b1
Alternatively, you can do a rebase:
git fetch
git rebase origin/master
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Change how fast “title” attribute's tooltip appears
...o way. The title attribute is implemented in a browser dependent fashion. For example I remember differences between IE and FF when using \r\n inside it.
Mozilla's docs explain the limits and functionality well.
If you want customization you may take a look at third party plugins such as qTip2 wh...