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Which data type for latitude and longitude?
...t's data in degrees longitude and latitude, same as in GPS. More about it: http://epsg.io/4326
Order is Longitude, Latitude - so if you plot it as the map, it is (x, y).
To find closest point you need first to create spatial index:
create index on your_table using gist (geog);
and then request,...
What is the difference between a .xib file and a .storyboard?
...oards significantly reduce the amount of code you need to write.
Source: http://www.appcoda.com/use-storyboards-to-build-navigation-controller-and-table-view/
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What is Linux’s native GUI API?
...nterface that allows programs to do things like open and read files. See http://en.wikipedia.org/wiki/System_call for a general introduction.
A real Linux system will also have an entire "stack" of other software running on it, in order to provide a graphical user interface and other features. ...
Regex exactly n OR m times
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Here is the complete list of quantifiers (ref. http://www.regular-expressions.info/reference.html):
?, ?? - 0 or 1 occurences (?? is lazy, ? is greedy)
*, *? - any number of occurences
+, +? - at least one occurence
{n} - exactly n occurences
{n,m} - n to m occurences, ...
What is aria-label and how should I use it?
... W3C seems to promote the aria-label rather that the title attribute here: http://www.w3.org/TR/2014/NOTE-WCAG20-TECHS-20140916/ARIA14 in a similar example, you can see that the technology support does not include standard browsers : http://www.w3.org/WAI/WCAG20/Techniques/ua-notes/aria#ARIA14
In f...
How does this checkbox recaptcha work and how can I use it?
I've recently signed up to the oneplusone website https://account.oneplus.net/sign-up , and noticed this checkbox recaptcha
...
Types in Objective-C on iOS
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This is a good overview:
http://reference.jumpingmonkey.org/programming_languages/objective-c/types.html
or run this code:
32 bit process:
NSLog(@"Primitive sizes:");
NSLog(@"The size of a char is: %d.", sizeof(char));
NSLog(@"The size of sh...
Python multiprocessing PicklingError: Can't pickle
...= _
>>> res.get()
101
Get pathos (and if you like, dill) here:
https://github.com/uqfoundation
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Set value to null in WPF binding
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You can try using a ValueConverter (IValueConverter)
http://msdn.microsoft.com/en-us/library/system.windows.data.ivalueconverter.aspx
Of the back of my head here, something like:
public class DoubleConverter : IValueConverter
{
public object Convert(object value, Type tar...
How persistent is localStorage?
...Cookies" when Time range is "Everything" (via nsICookieManager::removeAll)
https://developer.mozilla.org/en/DOM/Storage
In DOM Storage it is not possible to specify an expiration period for any of your data. All expiration rules are left up to the user. In the case of Mozilla, most of those rules ar...