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Using a constant NSString as the key for NSUserDefaults
...nother file. see Constants in Objective-C for more information. To explain by example, this is what I currently use for keys that I only need to use in one .m file:
static NSString * const kSomeLabel = @"...";
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Regex: Specify “space or start of string” and “space or end of string”
...his pattern to replace, remember to keep the spaces in the replaced result by replacing with the pattern $1string$2.
– Mahn
Jan 27 '15 at 16:57
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ApartmentState for dummies
... is specified in the CoInitializeEx() call, a function that must be called by any thread that does anything with COM. The CLR makes that call automatically whenever it starts a thread. For the main startup thread of your program, it gets the value to pass from the [STAThread] or [MTAThread] attrib...
How do you count the number of occurrences of a certain substring in a SQL varchar?
...
The first way that comes to mind is to do it indirectly by replacing the comma with an empty string and comparing the lengths
Declare @string varchar(1000)
Set @string = 'a,b,c,d'
select len(@string) - len(replace(@string, ',', ''))
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OSGi: What are the differences between Apache Felix and Apache Karaf?
...just the OSGi core runtime. Karaf provides a "distribution" based on Felix by adding other features such as a console, an SSH remoting mechanism, a file deployer and more.
In this diagram of the Karaf architecture, Felix (or other OSGi implementation - currently Equinox is also supported) is the O...
What is the difference between sites-enabled and sites-available directory?
...nce is that virtual sites listed in the sites-enabled directory are served by apache. In the sites-available directory there are the virtual sites that exist on your server but people can't access them because they are not enabled yet.
sites-available: this directory has configuration files for ...
Programmatically set height on LayoutParams as density-independent pixels
...d-coded to only support a fixed number of densities. If you want to scale by the density scaling factor, just multiply by developer.android.com/reference/android/util/… which would also be the same as doing (size * metrics.densityDpi) / DisplayMetrics.DENSITY_DEFAULT.
– hack...
differences in application/json and application/x-www-form-urlencoded
...a long query string.The query string contains name-
value pairs separated by & character
e.g. field1=value1&field2=value2
It can be simple request called simple - don't trigger a preflight check
Simple request must have some properties. You can look here for more info. One of
them is th...
JavaScript displaying a float to 2 decimal places
...@anwar you can't reliably round a float (arguably you can round a float at all) - you'll get something like 0.0500 or even 0.0500000000001. See floating-point-gui.de
– jmc
Jan 12 '18 at 0:08
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Difference between Mutable objects and Immutable objects [duplicate]
...g( "old String" );
System.out.println( myString );
myString.replaceAll( "old", "new" );
System.out.println( myString );
The output is:
java.awt.Point[0.0, 0.0]
java.awt.Point[1.0, 0.0]
old String
old String
s...