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What is an example of the Liskov Substitution Principle?
...ple (LSP) is a fundamental principle of object oriented design. What is it and what are some examples of its use?
31 Answer...
How do I serialize an object and save it to a file in Android?
Say I have some simple class and once it's instantiated as an object I want to be able to serialize its contents to a file, and retrieve it by loading that file at some later time... I'm not sure where to start here, what do I need to do to serialize this object to a file?
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Read String line by line
...it(System.getProperty("line.separator"));
This gives you all lines in a handy array.
I don't know about the performance of split. It uses regular expressions.
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Show a number to two decimal places
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round() would be better for it's readability and simplicity too, but for anything critical be aware that it has been known to be buggy
– StringsOnFire
Feb 26 '14 at 22:07
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Any way to Invoke a private method?
I have a class that uses XML and reflection to return Object s to another class.
7 Answers
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How does std::move() transfer values into RValues?
...ference<Object>::type&&>(arg);
}
Since remove_reference converts T& to T or T&& to T, and Object is not reference, our final function is:
Object&& move(Object&& arg)
{
return static_cast<Object&&>(arg);
}
Now, you might wonder: do we ...
Storing sex (gender) in database
... 2,147,483,648 to 2,147,483,647
BIT 1 (2 if 9+ columns) 2 (0 and 1)
CHAR(1) 1 26 if case insensitive, 52 otherwise
The BIT data type can be ruled out because it only supports two possible genders which is inadequate. While INT supports more than two options, i...
What is the best way to implement constants in Java? [closed]
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That is perfectly acceptable, probably even the standard.
(public/private) static final TYPE NAME = VALUE;
where TYPE is the type, NAME is the name in all caps with underscores for spaces, and VALUE is the constant value;
I highly recommend NOT putting your constants in ...
How to compare if two structs, slices or maps are equal?
I want to check if two structs, slices and maps are equal.
5 Answers
5
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View's getWidth() and getHeight() returns 0
I am creating all of the elements in my android project dynamically. I am trying to get the width and height of a button so that I can rotate that button around. I am just trying to learn how to work with the android language. However, it returns 0.
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