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How can two strings be concatenated?
...("Hello", "world", sep=" ")
[1] "Hello world"
where the argument sep specifies the character(s) to be used between the arguments to concatenate,
or collapse character vectors
> x <- c("Hello", "World")
> x
[1] "Hello" "World"
> paste(x, collapse="--")
[1] "Hello--World"
where the ar...
How to use NSJSONSerialization
...ectWithData: data options: NSJSONReadingMutableContainers error: &e];
if (!jsonArray) {
NSLog(@"Error parsing JSON: %@", e);
} else {
for(NSDictionary *item in jsonArray) {
NSLog(@"Item: %@", item);
}
}
s...
What is mod_php?
... function : it returns the type of interface between web server and PHP.
If you check in your Apache's configuration files, when using mod_php, there should be a LoadModule line looking like this :
LoadModule php5_module modules/libphp5.so
(The file name, on the right, can be different -...
Bold words in a string of strings.xml in Android
...else who found the official Android documentation a bit too vague on this: if you use tags like <b> in your string resource, make sure you retrieve it using getText(R.string.whatever) rather than getString(R.string.whatever)
– andygeers
Jun 9 '15 at 12:15...
What does “S3 methods” mean in R?
...t there are S3 and S4 object systems, and some recommend to use S3 over S4 if possible (See Google's R Style Guide at http://google-styleguide.googlecode.com/svn/trunk/google-r-style.html )*. However, I do not know the exact definition of S3 methods/objects.
...
Is it possible to program iPhone in C++
...se Objective-C++, which you can read about at Apple Developer Connection.
If you know C++ already, learning Objective-C would be pretty simple, if you decided to give that a try. More info on that topic is at the ADC as well.
...
Flatten List in LINQ
...have expected the language designers to come up with a shortcut syntax specifically for lists of lists
– Andy
Feb 9 '17 at 12:15
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How to test android referral tracking?
...our device will receive the referral. This can be a good extra test to see if your BroadcastReceiver can be found properly.
The output I see (especially the last line is important):
05-13 17:28:08.335: D/Collectionista FacadeBroadcastReceiver(8525): Receiver called
05-13 17:28:08.335: V/Collection...
How to make inline functions in C#
...(x);
}
Action<int> helloWorld = delegate // parameters can be elided if ignored
{
Console.WriteLine("Hello world!");
}
Lambdas are new in C# 3.0 and come in two flavours.
Expression lambdas:
Func<int, int, int> add = (int x, int y) => x + y; // or...
Func<int, int, int> ...
How to send a JSON object using html form data
...
Get complete form data as array and json stringify it.
var formData = JSON.stringify($("#myForm").serializeArray());
You can use it later in ajax. Or if you are not using ajax; put it in hidden textarea and pass to server. If this data is passed as json string via norm...