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What to use instead of “addPreferencesFromResource” in a PreferenceActivity?
...wer above, after reading an example from Android-er I found you can easily convert your preference activity into a preference fragment. If you have the following activity:
public class MyPreferenceActivity extends PreferenceActivity
{
@Override
protected void onCreate(final Bundle savedInst...
Integrating the ZXing library directly into my Android application
...l. But can u also provide the code, where the reverse can be done. I mean, convert the QR code back to the String?
– Shaon Hasan
May 15 '14 at 15:31
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ToList()— does it create a new list?
...ion operations. Extension methods like ToList() and ToArray() allow you to convert the computed sequence into a standard collection.
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How to concatenate items in a list to a single string?
...
A more generic way to convert python lists to strings would be:
>>> my_lst = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
>>> my_lst_str = ''.join(map(str, my_lst))
>>> print(my_lst_str)
'12345678910'
...
Explicitly calling return in a function or not
...eated from data selected this way:
bench_nor2 <- function(x,repeats) { system.time(rep(
# without explicit return
(function(x) vector(length=x,mode="numeric"))(x)
,repeats)) }
bench_ret2 <- function(x,repeats) { system.time(rep(
# with explicit return
(function(x) return(vector(length=x,mode...
How to model type-safe enum types?
...nother class that is basically a wrapper around a string and can be freely converted in both directions (as is the case for Symbol). I guess that's what you meant when saying "It won't give you any type safety", it just wasn't very clear given that OP explicitly asked for type safe solutions. I wasn...
How do I use the CONCAT function in SQL Server 2008 R2?
...rver, SELECT 'varchar(' + 5 + ')' throws the error "Conversion failed when converting the nvarchar value 'varchar(' to data type int", so I guess your answer doesn't hold.
– Alexander
Apr 6 '16 at 9:13
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Calculating distance between two points, using latitude longitude?
...n2(Math.sqrt(a), Math.sqrt(1 - a));
double distance = R * c * 1000; // convert to meters
double height = el1 - el2;
distance = Math.pow(distance, 2) + Math.pow(height, 2);
return Math.sqrt(distance);
}
sh...
How to efficiently concatenate strings in go
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If you have a string slice that you want to efficiently convert to a string then you can use this approach. Otherwise, take a look at the other answers.
There is a library function in the strings package called Join:
http://golang.org/pkg/strings/#Join
A look at the code of Join s...
Calculate distance between 2 GPS coordinates
...s and seconds are out of 60 so S31 30' is -31.50 degrees.
Don't forget to convert degrees to radians. Many languages have this function. Or its a simple calculation: radians = degrees * PI / 180.
function degreesToRadians(degrees) {
return degrees * Math.PI / 180;
}
function distanceInKmBetwe...