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Hidden Features of Java
After reading Hidden Features of C# I wondered, What are some of the hidden features of Java?
100 Answers
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Java's L number (long) specification
...repositories, etc..). IMHO the priority is not to miss the Shift key. Btw. what font do you recommend? I like monospace and it's the default almost in all editors, CLIs etc that I've see and in this font l and 1 (0 and O resp.) are fairly similar.
– dingalapadum
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What's the best manner of implementing a social activity stream? [closed]
...s a serialized object with meta-data for the activity where you can put in whatever you want
This limits the searches/lookups, you can do in the feeds, to users, time and activity types, but in a facebook-type activity feed, this isn't really limiting. And with correct indices on the table the loo...
How to find the lowest common ancestor of two nodes in any binary tree?
...n, but the root==p || root==q => return root bit seems overoptimistic. What if it turns out root is p/q, but the other sought-for node is not actually in the tree?
– Ian Durkan
Jun 3 '11 at 2:12
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Redis: Show database size/size for keys
...ds a bit of introspection of key names via regexs that give you an idea of what kinds of application keys (according to whatever naming structure you're using), are stored in Redis. Combined with the more general output of redis-sampler, this should give you an extremely good idea of what's going on...
How to turn NaN from parseInt into 0 for an empty string?
... the correct default when your preferred default is ZERO (granted, this is what the OP wanted). As you have mentioned, due to the falsy nature of the '0' input, it is treated as invalid input in this case, and the statement will return the default value instead (maybe not what was expected!)
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Struct Constructor in C++?
...ind this old comment. :) Yeesh wish I could edit it...even I'm confused at what I wrote. I think I omitted the word "bases" from the end but even that sucks.
– GManNickG
Apr 5 '13 at 23:40
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What is the use of printStackTrace() method in Java?
...intStackTrace is called on the IOException object in the catch block.
What does printStackTrace() actually do?
10 An...
MySQL: What's the difference between float and double?
...ing why, I checked the mysql documentation, but honestly didn't understand what the difference is.
6 Answers
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How to convert enum value to int?
...ue;
}
}
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public int getTaxValue() {
Tax tax = Tax.NONE; // Or whatever
return tax.getValue();
}
(I've changed the names to be a bit more conventional and readable, btw.)
This is assuming you want the value assigned in the constructor. If that's not what you want, you'll need to g...