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Why doesn't C# support the return of references?
...orts both these features. You could then do things like
static ref int Max(ref int x, ref int y)
{
if (x > y)
return ref x;
else
return ref y;
}
and then call it with
int a = 123;
int b = 456;
ref int c = ref Max(ref a, ref b);
c += 100;
Console.WriteLine(b); // 556!
...
Regular Expression to reformat a US phone number in Javascript
...ences for validating) a phone number for display in Javascript. Here's an example of some of the data:
12 Answers
...
Converting from longitude\latitude to Cartesian coordinates
... it all depends on the accuracy you require for what you are doing. For example, the result calculated from "Manhattan Distance Formula" versus the result from the "Distance Formula" can be better for certain situations as it is computationally less expensive. Think "which point is closest?" scen...
Cleaning `Inf` values from an R dataframe
... do.call to recreate a data.frame.
do.call(data.frame,lapply(DT, function(x) replace(x, is.infinite(x),NA)))
Option 2 -- data.table
You could use data.table and set. This avoids some internal copying.
DT <- data.table(dat)
invisible(lapply(names(DT),function(.name) set(DT, which(is.infinite(...
Scala how can I count the number of occurrences in a list
...
what if I wanted to define an accumulator map in that expression instead of creating a new map?
– Tobias Kolb
Jun 12 '19 at 13:33
add a comment
...
Convert a Scala list to a tuple?
...a tuple must be encoded in its type, and hence known at compile time. For example, (1,'a',true) has the type (Int, Char, Boolean), which is sugar for Tuple3[Int, Char, Boolean]. The reason tuples have this restriction is that they need to be able to handle a non-homogeneous types.
...
What is aspect-oriented programming?
...n code and define it vertically like so:
function mainProgram()
{
var x = foo();
doSomethingWith(x);
return x;
}
aspect logging
{
before (mainProgram is called):
{
log.Write("entering mainProgram");
}
after (mainProgram is called):
{
log.Write( "ex...
UnicodeDecodeError: 'ascii' codec can't decode byte 0xef in position 1
...$ python
Python 2.7.3 (default, Apr 20 2012, 22:39:59)
[GCC 4.6.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> s = '(\xef\xbd\xa1\xef\xbd\xa5\xcf\x89\xef\xbd\xa5\xef\xbd\xa1)\xef\xbe\x89'
>>> s1 = s.decode('utf-8')
>>> print s1
(...
How to delete/unset the properties of a javascript object? [duplicate]
... should read fully what the effects are of using this:
delete object.index; //true
object.index; //undefined
but if I was to use like so:
var x = 1; //1
delete x; //false
x; //1
but if you do wish to delete variables in the global namespace, you can use it's global object such as window, or ...
Why Choose Struct Over Class?
...fy a single instance of a variable. (For the more technically minded, the exception to that is when capturing a struct inside a closure because then it is actually capturing a reference to the instance unless you explicitly mark it to be copied).
Classes can also become bloated because a class can ...