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Use of def, val, and var in scala
...12 , even though person.age=20 was successfully executed. I found that this happens because I used def in def person = new Person("Kumar",12) . If I use var or val the output is 20 . I understand the default is val in scala. This:
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Difference between HBase and Hadoop/HDFS
This is kind of naive question but I am new to NoSQL paradigm and don't know much about it. So if somebody can help me clearly understand difference between the HBase and Hadoop or if give some pointers which might help me understand the difference.
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Calling Java varargs method with single null argument?
... arg[0] and arg[1] as null s. But if I call foo(null) , arg itself is null. Why is this happening?
6 Answers
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Any reason to write the “private” keyword in C#?
As far as I know, private is the default everywhere in C# (meaning that if I don't write public , protected , internal , etc. it will be private by default). (Please correct me if I am wrong.)
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Checking if a variable is not nil and not zero in ruby
I am using the following code to check if a variable is not nil and not zero
18 Answers
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String.Empty versus “” [duplicate]
How is String.Empty different from "" ?
5 Answers
5
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How to find whether or not a variable is empty in Bash
How can I check if a variable is empty in Bash?
10 Answers
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How to get UITableView from UITableViewCell?
I have a UITableViewCell which is linked to an object and I need to tell if the cell is visible. From the research I've done, this means I need to somehow access the UITableView that contains it (from there, there are several ways to check if it's visible). So I'm wondering if UITableViewCell ...
How are 3D games so efficient? [closed]
There is something I have never understood. How can a great big PC game like GTA IV use 50% of my CPU and run at 60fps while a DX demo of a rotating Teapot @ 60fps uses a whopping 30% ?
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Why is NaN not equal to NaN? [duplicate]
...number) and prescribes that NaN should compare as not equal to itself. Why is that?
6 Answers
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