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Generic TryParse
...nk if it did then probably an exception should be thrown instead of essentially silently failing and return something else. When I tried it on my own class (in which I didn't define a typeconverter), I got a converter from GetConverter, but then the ConvertFromString threw a NotSupportedException.
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Why can't overriding methods throw exceptions broader than the overridden method?
...tends A {
@Override
public void foo() throws SocketException {..} // allowed
@Override
public void foo() throws SQLException {..} // NOT allowed
}
SocketException extends IOException, but SQLException does not.
This is because of polymorphism:
A a = new B();
try {
a.foo();
} cat...
Can I store the .git folder outside the files I want tracked?
...ckup and Git will pick them up on each command. That will only comfortably allow you to work in a single repository per shell, though.
I’d rather suggest symlinking the .git directory to somewhere else, or creating a symlink to the .git directory from your main backup directory.
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Android ViewPager with bottom dots
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No need for that much code.
You can do all this stuff without coding so much by using only viewpager with tablayout.
Your main Layout:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res...
How to store standard error in a variable
... do it. You'd have to build the entire pipeline into the sub-shell, eventually sending its final standard output to a file, so that you can redirect the errors to standard output.
ERROR=$( { ./useless.sh | sed s/Output/Useless/ > outfile; } 2>&1 )
Note that the semi-colon is needed (in...
Is it safe to delete a void pointer?
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It depends on "safe." It will usually work because information is stored along with the pointer about the allocation itself, so the deallocator can return it to the right place. In this sense it is "safe" as long as your allocator uses internal boundary tag...
Why use a ReentrantLock if one can use synchronized(this)?
...time-out. ReentrantLock also has support for configurable fairness policy, allowing more flexible thread scheduling.
The constructor for this class accepts an optional fairness parameter. When set true, under contention, locks favor granting access to the longest-waiting thread. Otherwise this lock...
Maven project version inheritance - do I have to specify the parent version?
...most cases. Moreover, this parent's version declaration is bumped automatically by Maven Release Plugin, so - in fact - it's not a problem that you have version in 2 places as long as you use Maven Release Plugin for releasing or just bumping versions.
Notice that there are some cases when this beh...
Why does Google prepend while(1); to their JSON responses?
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It prevents JSON hijacking, a major JSON security issue that is formally fixed in all major browsers since 2011 with ECMAScript 5.
Contrived example: say Google has a URL like mail.google.com/json?action=inbox which returns the first 50 messages of your inbox in JSON format. Evil websites on...
Should image size be defined in the img tag height/width attributes or in CSS? [duplicate]
...on what you want to do, you would specify one and/or the other. I think ideally, the original height and width would always be specified as HTML element attributes, while styling information should optionally be conveyed in CSS.
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