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Why use Abstract Base Classes in Python?
...sinstance(c, MyABC): # will be true
c.abc_method() # raises AttributeError
Unfortunately this one of those "just don't do that" traps (of which Python has relatively few!): avoid defining ABCs with both a __subclasshook__ and non-abstract methods. Moreover, you should make your definition of...
Rename a class in Xcode: Refactor… is grayed out (disabled). Why?
...ame" in latest xcode and it failed - again!
(this time with the incorrect error: "Unable to determine the language of", one of those error messages where Apple put the wrong text in place)
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How to create a database from shell command?
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I get this error ERROR 1046 (3D000) at line 27: No database selected when I run echo "create database databasename" | mysql -u -u username -p command
– keerthi
Mar 15 '13 at 5:16
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How do I combine a background-image and CSS3 gradient on the same element?
How do I use CSS3 gradients for my background-color and then apply a background-image to apply some sort of light transparent texture?
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iOS app error - Can't add self as subview
... @Kalle This solution works for push/pop. But how to solve this error if I use segue?
– Geek
Mar 14 '14 at 16:37
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How can I fix WebStorm warning “Unresolved function or method” for “require” (Firefox Add-on SDK)
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I still have the error in the compiler error TS2304: Cannot find name 'require'.
– SuperUberDuper
Oct 21 '16 at 12:12
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Convert string date to timestamp in Python
...ent call last): File "<stdin>", line 1, in <module> AttributeError: 'datetime.datetime' object has no attribute 'timestamp'
– Zdenek Maxa
Jan 30 '15 at 12:07
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How do I do a case-insensitive string comparison?
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SVN upgrade working copy
I cannot do a SVN commit. I get this error:
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What is PECS (Producer Extends Consumer Super)?
...lt;Number> numbers = new ArrayList<Integer>();//gets compile time error
Integer[] myInts = {1,2,3,4};
Number[] myNumber = myInts;
myNumber[0] = 3.14; //attempt of heap pollution i.e. at runtime gets java.lang.ArrayStoreException: java.lang.Double(we can fool compiler but not run-time)
Lis...