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What do
...case class Foo[A](a:A) { // 'A' can be substituted with any type
// getStringLength can only be used if this is a Foo[String]
def getStringLength(implicit evidence: A =:= String) = a.length
}
The implicit argument evidence is supplied by the compiler, iff A is String. You can think of it a...
import module from string variable
...
@mzjn This is for import moduleName where moduleName is string. How about from moduleName import * ?
– Nam G VU
May 30 '17 at 6:47
2
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Is Python strongly typed?
...typing means that the type of a value doesn't change in unexpected ways. A string containing only digits doesn't magically become a number, as may happen in Perl. Every change of type requires an explicit conversion.
Dynamic typing means that runtime objects (values) have a type, as opposed to stati...
What does the 'L' in front a string mean in C++?
... characters (wchar_t) instead of narrow characters (char).
It's a just a string of a different kind of character, not necessarily a Unicode string.
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Is there a “not in” operator in JavaScript for checking object properties?
... @MajidFouladpour id is an variable that could have any value, 'id' is a string with the two letters i and d, so hasOwnProperty(id) checks if the property specified in the variable id exists, and hasOwnProperty('id') checks if there is a property named id.
– some
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What is the !! (not not) operator in JavaScript?
...1/0) === true // Infinity is truthy
!!"" === false // empty string is falsy
!!"foo" === true // non-empty string is truthy
!!"false" === true // ...even if it contains a falsy value
!!window.foo === false // undefined is falsy
!!null === false // n...
How do I make a composite key with SQL Server Management Studio?
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So if one is a string and the other is an int, it's not possible? Doesn't seem to be...
– B. Clay Shannon
Nov 19 '13 at 23:06
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Do C# Timers elapse on a separate thread?
...les the collision for you
try putting this in a console
static void Main(string[] args)
{
Debug.WriteLine(Thread.CurrentThread.ManagedThreadId);
var timer = new Timer(1000);
timer.Elapsed += timer_Elapsed;
timer.Start();
Console.ReadLine();
}
static void timer_Elapsed(object s...
Leaflet - How to find existing markers, and delete markers?
...ar marker = new Array();
/*Some Coordinates (here simulating somehow json string)*/
var items = [{"lat":"51.000","lon":"13.000"},{"lat":"52.000","lon":"13.010"},{"lat":"52.000","lon":"13.020"}];
/*pushing items into array each by each and then add markers*/
function itemWrap() {
for(i=0;i<items...
AJAX POST and Plus Sign ( + ) — How to Encode?
...at have already been decoded.
Example:
In your JS:
// url encode your string
var string = encodeURIComponent('+'); // "%2B"
// send it to your server
window.location = 'http://example.com/?string='+string; // http://example.com/?string=%2B
On your server:
echo $_GET['string']; // "+"
It is...