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Error in Swift class: Property not initialized at super.init call

...error:” Safety check 1 “A designated initializer must ensure that all of the “properties introduced by its class are initialized before it delegates up to a superclass initializer.” Excerpt From: Apple Inc. “The Swift Programming Language.” iBooks. https://itunes.apple.co...
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IOCTL Linux device driver [closed]

...l, which means "input-output control" is a kind of device-specific system call. There are only a few system calls in Linux (300-400), which are not enough to express all the unique functions devices may have. So a driver can define an ioctl which allows a userspace application to send it orders. How...
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Unable to open project… cannot be opened because the project file cannot be parsed

... this should be marked as the answer. Really good stuff, thanks – owen gerig May 10 '13 at 15:10 12 ...
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How to remove multiple indexes from a list at the same time? [duplicate]

...t-in operation to remove a number of indexes at once. Your example is actually a contiguous sequence of indexes, so you can do this: del my_list[2:6] which removes the slice starting at 2 and ending just before 6. It isn't clear from your question whether in general you need to remove an arbitr...
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Javascript - Track mouse position

I am hoping to track the position of the mouse cursor, periodically every t mseconds. So essentially, when a page loads - this tracker should start and for (say) every 100 ms, I should get the new value of posX and posY and print it out in the form. ...
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mailto link with HTML body

... As you can see in RFC 6068, this is not possible at all: The special <hfname> "body" indicates that the associated <hfvalue> is the body of the message. The "body" field value is intended to contain the content for the first text/plain body part of the m...
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Is there a way to make GHC provide the type class constraints of typed holes?

...ng out-of-scope types (use -fprint-potential-instances to see them all) • In the expression: show _ In an equation for ‘it’: it = show _ <interactive>:3:6: error: • Found hole: _ :: a0 Where: ‘a0’ is an ambiguous type variable • In the first argum...
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what is reverse() in Django

...!-- django <= 1.4 --> <a href="{% url url_name %}">link which calls some_view</a> <!-- django >= 1.5 or with {% load url from future %} in your template --> <a href="{% url 'url_name' %}">link which calls some_view</a> This will be rendered as: <a href="...
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Changing the size of a column referenced by a schema-bound view in SQL Server

...INDING defined. is there any easy way of bypassing the constrain or do i really need to remove the views to get it working? – Staelen Aug 24 '09 at 5:26 1 ...
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Replace non-ASCII characters with a single space

I need to replace all non-ASCII (\x00-\x7F) characters with a space. I'm surprised that this is not dead-easy in Python, unless I'm missing something. The following function simply removes all non-ASCII characters: ...