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Why do I get AttributeError: 'NoneType' object has no attribute 'something'?
...stead of an instance of whatever Class or Object you think you're working with, you've actually got None. That usually means that an assignment or function call up above failed or returned an unexpected result.
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Does Ruby regular expression have a not match operator like “!~” in Perl?
...whether ruby regex has a not match operator just like !~ in perl. I feel it's inconvenient to use (?!xxx) or (?<!xxxx) because you cannot use regex patterns in the xxx part.
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How to use the CancellationToken property?
...lationRequested)
{
return;
}
Console.Write("345");
}
}
That's it. You always need to handle cancellation by yourself - exit from method when it is appropriate time to exit (so that your work and data is in consistent state)
UPDATE: I prefer not writing whil...
Any way to Invoke a private method?
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You can invoke private method with reflection. Modifying the last bit of the posted code:
Method method = object.getClass().getDeclaredMethod(methodName);
method.setAccessible(true);
Object r = method.invoke(object);
There are a couple of caveats. First...
How to mock localStorage in JavaScript unit tests?
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Here is a simple way to mock it with Jasmine:
beforeEach(function () {
var store = {};
spyOn(localStorage, 'getItem').andCallFake(function (key) {
return store[key];
});
spyOn(localStorage, 'setItem').andCallFake(function (key, value) {
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How to fade to display: inline-block
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You could use jQuery's animate function to change the opacity yourself, leaving the display unaffected.
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A method to reverse effect of java String.split()? [duplicate]
I am looking for a method to combine an array of strings into a delimited
String. An opposite to split().
16 Answers
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How to turn off CodeLens-References
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edited Jun 3 '14 at 21:46
answered Jan 4 '14 at 20:04
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Installing SciPy with pip
It is possible to install NumPy with pip using pip install numpy .
15 Answers
15...
What is the difference between onBlur and onChange attribute in HTML?
When is one called versus the other? Is there a situation were onChange would be called but onBlur would not be called?
7 A...