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What is the difference between “px”, “dip”, “dp” and “sp”?
...x
Pixels - corresponds to actual pixels on the screen.
in
Inches - based on the physical size of the screen.
1 Inch = 2.54 centimeters
mm
Millimeters - based on the physical size of the screen.
pt
Points - 1/72 of an inch based on the physical size of the screen.
dp or dip
...
UIStatusBarStyle PreferredStatusBarStyle does not work on iOS 7
... my iPhone application built with Xcode 5 for iOS 7 I set UIViewControllerBasedStatusBarAppearance=YES in info.plist , and in my ViewController I have this code:
...
Why should I use IHttpActionResult instead of HttpResponseMessage?
...onseMsg);
return response;
}
Note, ResponseMessage is a method of the base class ApiController that your controller should inherit from.
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Django - what is the difference between render(), render_to_response() and direct_to_template()?
... context_processors.
But direct_to_template should be avoided as function based generic views are deprecated. Either use render or an actual class, see https://docs.djangoproject.com/en/1.3/topics/generic-views-migration/
I'm happy I haven't typed RequestContext in a long, long time.
...
How to Parse Command Line Arguments in C++? [duplicate]
... Alternatively, if you can't use boost for some reason then the standard c based "getopt" function will also get the job done.
– Matt
Jul 16 '09 at 2:47
12
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How expensive is RTTI?
...6 GHz Dual-Core Intel Xeon.
The class in question is derived from a single base class.
typeid().name() returns "N12fastdelegate13FastDelegate1IivEE"
5 Cases were tested:
1) dynamic_cast< FireType* >( mDelegate )
2) typeid( *iDelegate ) == typeid( *mDelegate )
3) typeid( *iDelegate ).name() ==...
Real-world applications of zygohistomorphic prepromorphisms
...hemes package.
zygoHistoPrepro
:: (Unfoldable t, Foldable t)
=> (Base t b -> b)
-> (forall c. Base t c -> Base t c)
-> (Base t (EnvT b (Stream (Base t)) a) -> a)
-> t
-> a
The implementation was simplified as well.
zygoHistoPrepro f = gprepro (distZygoT f...
How do I replace NA values with zeros in an R dataframe?
...
The dplyr hybridized options are now around 30% faster than the Base R subset reassigns. On a 100M datapoint dataframe mutate_all(~replace(., is.na(.), 0)) runs a half a second faster than the base R d[is.na(d)] <- 0 option. What one wants to avoid specifically is using an ifelse() or ...
Indent multiple lines quickly in vi
...other answers and comments of this question, and it adds extra information based on the Vim documentation and the Vim wiki. For conciseness, this answer doesn't distinguish between Vi and Vim-specific commands.
In the commands below, "re-indent" means "indent lines according to your indentation set...
Is the Javascript date object always one day off?
...ar
new Date(2011, 0); // Normal behavior as months in this case are zero based.
=> // Sat Jan 01 2011 00:00:00 GMT-0700 (MST)
Get the last month and day of a year
new Date((2011 + 1), 0, 0); // The second zero roles back one day into the previous month's last day.
=> // Sat Dec 31 201...