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What is the main difference between Inheritance and Polymorphism?
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Inheritance is when a 'class' derives from an existing 'class'. So if you have a Person class, then you have a Student class that extends Person, Student inherits all the things that Person has. There are some details around the access modifiers you put on the ...
iOS Safari – How to disable overscroll but allow scrollable divs to scroll normally?
...ght) {
e.currentTarget.scrollTop -= 1;
}
});
// Stops preventDefault from being called on document if it sees a scrollable div
$('body').on('touchmove', selScrollable, function(e) {
e.stopPropagation();
});
Note that this won't work if you want to block whole page scrolling when a div does...
When to encode space to plus (+) or %20?
... The browser will create a query+name=query+value parameter from a form with <input name="query name" value="query value">. It will not create query%20name from a form, but it's totally safe to use that instead, eg. if you're putting a form submission together youself for an XML...
Odd behavior when Java converts int to byte?
... bit (and we set the sign bit to 0 which is positive), the original 8 bits from the byte are read by Java as a positive value.
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Pull all commits from a branch, push specified commits to another
...think you're looking for is a 'cherry pick'. That is, take a single commit from the middle of one branch and add it to another:
A-----B------C
\
\
D
becomes
A-----B------C
\
\
D-----C'
This, of course, can be done with the git cherry-pick command.
The problem with this commit is t...
Accessing dict keys like an attribute?
...he "cons" list, this combines the namespace of stored keys (which may come from arbitrary and/or untrusted data!) with the namespace of builtin dict method attributes. For example:
d = AttrDict()
d.update({'items':["jacket", "necktie", "trousers"]})
for k, v in d.items(): # TypeError: 'list' obje...
How can you find and replace text in a file using the Windows command-line environment?
..., I would replace your shell. PowerShell gives you the full power of .Net from the command line. There are many commandlets built in as well. The example below will solve your question. I'm using the full names of the commands, there are shorter aliases, but this gives you something to Google fo...
Rotating videos with FFmpeg
...2,transpose=2" for 180 degrees.
Make sure you use a recent ffmpeg version from here (a static build will work fine).
Note that this will re-encode the audio and video parts. You can usually copy the audio without touching it, by using -c:a copy. To change the video quality, set the bitrate (for ex...
Task not serializable: java.io.NotSerializableException when calling function outside closure only o
...partitioned across the nodes of the cluster, but Spark abstracts this away from the user, letting the user interact with the RDD (collection) as if it were a local one.
Not to get into too many details, but when you run different transformations on a RDD (map, flatMap, filter and others), your tran...
What does “connection reset by peer” mean?
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@Robert Because that's where the reset came from. The peer sent an RST packet.
– Marquis of Lorne
Dec 17 '14 at 22:44
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