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What is the difference between instanceof and Class.isAssignableFrom(…)?
...ference between instanceof operator and isAssignableFrom method in Class.
Read instanceof as “is this (the left part) the instance of this or any subclass of this (the right part)” and read x.getClass().isAssignableFrom(Y.class) as “Can I write X x = new Y()”. In other words, instanceof ope...
How do I revert all local changes in Git managed project to previous state?
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and if you also want to clean your untracked files , read this stackoverflow.com/questions/61212/…
– Surasin Tancharoen
Nov 6 '12 at 9:32
9
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What is the easiest/best/most correct way to iterate through the characters of a string in Java?
... // process c
}
The first is probably faster, then 2nd is probably more readable.
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Fastest way to count exact number of rows in a very large table?
...er to use on a table that is not being written to because it allows "dirty reads". Don't advise people to use that hint unless they fully understand the consequences
– Davos
Jan 28 '13 at 22:55
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What are metaclasses in Python?
...the object class Foo. If it doesn't, it will use
type to create the class.
Read that several times.
When you do:
class Foo(Bar):
pass
Python does the following:
Is there a __metaclass__ attribute in Foo?
If yes, create in-memory a class object (I said a class object, stay with me here), with th...
Extracting substrings in Go
I'm trying to read an entire line from the console (including whitespace), then process it. Using bufio.ReadString, the newline character is read together with the input, so I came up with the following code to trim the newline character:
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What's the difference between and , and ?
...eans nothing to a blind person. On mobile phones
and other PDAs, text is already bold because screen resolution is very small. You can't bold a bold without screwing something up.
<b> is a style - we know what "bold" is supposed to look like.
<strong> however is an indication of how so...
Java8 Lambdas vs Anonymous classes
...gle-element array hack. Just don't try to use your counter from multiple threads. If you're going to allocate something on the heap and capture it in a lambda, you might as well use an AIC and add a field that you can mutate directly. Using a lambda this way can work, but why bother when you can use...
how to unit test file upload in django
...(0)
if not storage:
return data
image_file = ContentFile(data.read())
return storage.save(filename, image_file)
class UploadImageTests(TestCase):
def setUp(self):
super(UploadImageTests, self).setUp()
def test_valid_form(self):
'''
valid post data shoul...
How to include a font .ttf using CSS?
...at('truetype'); /* Chrome 4+, Firefox 3.5, Opera 10+, Safari 3—5 */
}
Read more here : http://css-tricks.com/snippets/css/using-font-face/
Look for browser support : Can I Use fontface
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