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Java Swing revalidate() vs repaint()
...n where I often want to replace the contents of a JPanel. To do this, I'm calling removeAll() , then adding my new content, then calling revalidate() .
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Log.INFO vs. Log.DEBUG [closed]
...
I usually try to use it like this:
DEBUG: Information interesting for Developers, when trying to debug a
problem.
INFO: Information interesting for Support staff trying to figure out the context of a given error
WARN to FATAL: P...
CSS display: inline vs inline-block [duplicate]
...s and padding, but not top & bottom
cannot have a width and height set
allow other elements to sit to their left and right.
see very important side notes on this here.
Block elements:
respect all of those
force a line break after the block element
acquires full-width if width not defined
Inli...
Resque vs Sidekiq? [closed]
...ns out of the box.
Cons
[huge] requires thread-safety of your code and all dependencies. If you run thread-unsafe code with threads, you're asking for trouble;
works on some rubies better than others (jruby is recommended, efficiency on MRI is decreased due to GVL (global VM lock)).
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Interface vs Abstract Class (general OO)
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While your question indicates it's for "general OO", it really seems to be focusing on .NET use of these terms.
In .NET (similar for Java):
interfaces can have no state or implementation
a class that implements an interface must provide an implementation of all the methods of tha...
What is the difference between ${var}, “$var”, and “${var}” in the Bash shell?
...bar', so loop runs once and
done # prints nothing (actually "")
var="foo bar"
for i in "${var}bar"; do # Expands to 'for i in "foo barbar"; do...'
echo $i # so runs the loop once
done
# foo barbar
Note that "${var}bar" in the second example above could also ...
How to run a makefile in Windows?
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For those with VS2012, the command prompt is called "Developer Command Prompt for VS2012". Start--> Search--> "command" is how I found it.
– undeniablyrob
Apr 17 '13 at 20:41
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Volatile boolean vs AtomicBoolean
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They are just totally different. Consider this example of a volatile integer:
volatile int i = 0;
void incIBy5() {
i += 5;
}
If two threads call the function concurrently, i might be 5 afterwards, since the compiled code will be somewh...
Difference between Build Solution, Rebuild Solution, and Clean Solution in Visual Studio?
...oesn't think it needs to rebuild a project, it won't. It may also use partially-built bits of the project if they haven't changed (I don't know how far it takes this)
Rebuild solution will clean and then build the solution from scratch, ignoring anything it's done before. The difference between this...
ConcurrentHashMap vs Synchronized HashMap
...ion that ConcurrentHashMap's size() result could be out of date. size() is allowed to return an approximation instead of an exact count according to "Java Concurrency in Practice" book. So this method should be used carefully.
– Andrii Lisun
Nov 8 '18 at 15:24
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