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How to define “type disjunction” (union types)?
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Well, in the specific case of Any*, this trick below won't work, as it will not accept mixed types. However, since mixed types wouldn't work with overloading either, this may be what you want.
First, declare a class with the types you wish to accept as below:
class StringOrInt[T]
ob...
Docker how to change repository name or rename image?
I'm trying to change repository name of the image:
7 Answers
7
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Can hash tables really be O(1)?
...f the input and n is the number of items in the hash.
The O(1) lookup performance claim makes at least two assumptions:
Your objects can be equality compared in O(1) time.
There will be few hash collisions.
If your objects are variable size and an equality check requires looking at all bits the...
What's the difference between a method and a function?
...ted with an object. In most respects it is identical to a function except for two key differences:
A method is implicitly passed the object on which it was called.
A method is able to operate on data that is contained within the class (remembering that an object is an instance of a class - the cla...
Change Screen Orientation programmatically using a Button
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Yes it is implementable!
ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
ActivityInfo.SCREEN_ORIENTATION_PORTRAIT
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
ActivityInfo
http://...
Override compile flags for single files
I would like to use a global set of flags for compiling a project, meaning that at my top-level CMakeLists.txt file I have specified:
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RE error: illegal byte sequence on Mac OS X
I'm trying to replace a string in a Makefile on Mac OS X for cross-compiling to iOS. The string has embedded double quotes. The command is:
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How can I initialize base class member variables in derived class constructor?
...and b in B because they are not members of B. They are members of A, therefore only A can initialize them. You can make them public, then do assignment in B, but that is not a recommended option since it would destroy encapsulation. Instead, create a constructor in A to allow B (or any subclass of A...
How do you get a Golang program to print the line number of the error it just called?
I was trying to throw errors in my Golang program with log.Fatal but, log.Fatal does not also print the line where the log.Fatal was ran. Is there no way of getting access to the line number that called log.Fatal? i.e. is there a way to get the line number when throwing an error?
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Protect .NET code from reverse engineering?
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You can't.
There are steps you can take to make it a little more difficult, but ultimately any executable on the local machine is crackable. Eventually, that code has to be converted into native machine code and every application that is runnable is vulnerable.
What you want to do is ...