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What is time_t ultimately a typedef to?
...e did for Y2K. Some of us will make a bucketload of money from being Y2k38 consultants, Leonard Nimoy will bring out another hilarious book about how we should all go and hide in the forest...
– paxdiablo
Jan 23 '09 at 0:40
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Xcode 4 and Core Data: How to enable SQL Debugging
I'm working on a universal iOS app and I'd like to see the raw SQL in the logs when I'm debugging. There is some info in this blog post about how to enable raw SQL logging for iOS Core Data development. The given example is for Xcode 3 and it's just not clear to me how to enable this in Xcode 4.
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Reshape three column data frame to matrix (“long” to “wide” format) [duplicate]
...nts to these functions,
meaning that many people (including me!) have to consult the
documentation every time.
How to use it (using the data from @Aaron):
pivot_wider(data = tmp, names_from = y, values_from = z)
x a b c
<fct> <dbl> <dbl> <dbl>
1 x ...
Get underlying NSData from UIImage
...ct with init(data: originalData), that originalData will be converted into raw data in some kind of internal format. These data can be retrieved later with
let rawData = myImage.cgImage?.dataProvider?.data as Data?
However because the rawData is raw, it is going to be even larger than when using ...
What's the difference between __PRETTY_FUNCTION__, __FUNCTION__, __func__?
...ical) extension, __FUNCSIG__.
For the nonstandard macros, you will want to consult your compiler's documentation. The Visual C++ extensions are included in the MSDN documentation of the C++ compiler's "Predefined Macros". The gcc documentation extensions are described in the gcc documentation page...
Accessing an array out of bounds gives no error, why?
...guous addresses. There is no bounds checking because it is simply exposing raw memory. Implementing a robust bounds-checking mechanism would have been almost impossible in C.
In C++, bounds-checking is possible on class types. But an array is still the plain old C-compatible one. It is not a class. ...
Eventual consistency in plain English
...ding server must return its own copy of the data, and doesn't have time to consult other servers and reach a mutual agreement on the content of the data. I wrote a blog post explaining this in more detail.
share
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jQuery remove all list items from an unordered list
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raw js (no jQuery) solution: stackoverflow.com/questions/10750137/remove-all-li-from-ul
– Eido95
Feb 17 '16 at 20:34
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How to download an entire directory and subdirectories using wget?
...t -r --no-parent http://abc.tamu.edu/projects/tzivi/repository/revisions/2/raw/tzivi/
The Parameters are:
-r //recursive Download
and
--no-parent // Don´t download something from the parent directory
If you don't want to download the entire content, you may use:
-l1 just download t...
When to use references vs. pointers
...fore that, there's boost::optional).
Another example is to use pointers to raw memory for specific memory manipulations. That should be hidden and localized in very narrow parts of the code, to help limit the dangerous parts of the whole code base.
In your example, there is no point in using a point...