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Difference between this and self in self-type annotations?
...alias for this in trait A. This is useful for accessing the this reference from an inner class. I.e. you could then use self instead of A.this when accessing the this reference of the trait A from a class nested within it. Example:
class MyFrame extends JFrame { frame =>
getContentPane().a...
differences between 2 JUnit Assert classes
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I believe they are refactoring from junit.framework to org.junit and junit.framework.Assert is maintained for backwards compatibility.
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Why use a prime number in hashCode?
...wer of two, which permits for bitwise optimization
Here's the full quote, from Item 9: Always override hashCode when you override equals:
The value 31 was chosen because it's an odd prime. If it were even and multiplication overflowed, information would be lost, as multiplication by 2 is equivalen...
How can I have linked dependencies in a git repo?
...ub.com/example/some_lib.git lib/some_lib
Note that this needs to be done from the top-level directory in your repository. So don't cd into the directory where you're putting it first.
After you add a submodule, or whenever someone does a fresh checkout of your repository, you'll need to do:
git ...
Find the files existing in one directory but not in the other [closed]
.../tools/tools/LiveSuit_For_Linux64 added
Or if you want to see only files from the first directory:
user@laptop:~$ python3 compare_dirs.py dir2/ dir1/ | grep dir1
DIR dir1/out/flavor-domino added
DIR dir1/target/vendor/flavor-domino added
FILE dir1/tmp/.kconfig-flavor_domino added
P.S. If you...
How do I merge a git tag onto a branch
...Remember before you merge you need to update the tag, it's quite different from branches (git pull origin tag_name won't update your local tags). Thus, you need the following command:
git fetch --tags origin
Then you can perform git merge tag_name to merge the tag onto a branch.
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How to deal with page breaks when printing a large HTML table
...nÜnür It's not a requirement, so you can't rely on it, and unfortunately from my testing I can see that webkit saw "may" and ignored anything beyond it. Strangely, IE's got some rather nice large table printing support. Never thought I'd sing its praises on any given point.
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Java: What is the difference between and ?
...t to add
If you use Class.forName method, it only intializes the class. So from within this method, it makes a call only to clinit and when you use newInstance on the object returned from forName, it will call init for the instance initialization. You can use below code to see it in debug.
public c...
junit & java : testing non-public methods [duplicate]
...testing. This is a fairly common practice.
You can test protected methods from unit tests in another package by creating a subclass of the class under test that overrides the methods you want to test as public, and having those overridden methods call the original methods with the super keyword. T...
How to do a https request with bad certificate?
...generally because you didn't set ServerName properly (it will need to come from an env var or something - don't belly-ache about this requirement... do it correctly).
In particular, if you use client certs and rely on them for authentication, you basically have a fake login that doesn't actually lo...