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What is the difference between public, protected, package-private and private in Java?
...e MyClass and I'm doing AnotherClass extends MyClass I will have access to all protected and public methods and properties from within AnotherClass. If I do MyClass myClass = new MyClass(); in AnotherClass somewhere - let's say the constructor - I will only have access to the public methods if it is...
How to get row from R data.frame
...ta row-wise.
x <- x %>% slice(1) #(n) for the nth row, or (i:n) for range i to n, (i:n()) for i to last row...
x
#> A B C
#> 1 5 4.25 4.5
#Test that the items in the row match the vector you wanted
x[1,]==y
#> A B C
#> 1 TRUE TRUE TRUE
Created on 2020-08-06 by...
Why is Double.MIN_VALUE in not negative
...ting point numbers, the precision is what is important as there's no exact range.
/**
* A constant holding the smallest positive nonzero value of type
* <code>double</code>, 2<sup>-1074</sup>. It is equal to the
* hexadecimal floating-point literal
* <code>0x0.0000...
How do I write good/correct package __init__.py files
...
__all__ is very good - it helps guide import statements without automatically importing modules
http://docs.python.org/tutorial/modules.html#importing-from-a-package
using __all__ and import * is redundant, only __all__ is nee...
How can I reliably determine the type of a variable that is declared using var at design time?
...ample, method bodies are skipped if the kibitz token does not lie in their range - this is done optimistically, and rolled back if it skipped over the token. The equivalent of extension methods - class helpers in Delphi - have a kind of versioned cache, so their lookup is reasonably fast. But Delphi...
How do you log all events fired by an element in jQuery?
I'd like to see all the events fired by an input field as a user interacts with it. This includes stuff like:
12 Answers
...
How to apply a Git patch to a file with a different name and path?
...ing nor external script.
In the first repository (this may also export a range of commit, use -1 if you want to select only one commit) :
git format-patch --relative <committish> --stdout > ~/patch
In the second repository :
git am --directory blue/red/ ~/patch
Instead of using --re...
What is the difference between canonical name, simple name and class name in Java Class?
...
I've been confused by the wide range of different naming schemes as well, and was just about to ask and answer my own question on this when I found this question here. I think my findings fit it well enough, and complement what's already here. My focus is ...
Why is my variable unaltered after I modify it inside of a function? - Asynchronous code reference
...terday, the work I was doing required some information from a colleague. I rang him up; here's how the conversation went:
Me: Hi Bob, I need to know how we foo'd the bar'd last week. Jim wants a report on it, and you're the only one who knows the details about it.
Bob: Sure thing, but it'...
How to open a web server port on EC2 instance
... answer just instead of using the drop down, type the port (8787) in "port range" an then "Add rule".
Go to the "Network & Security" -> Security Group settings in the left hand navigation
Find the Security Group that your instance is apart of
Click on Inbound Rules
...