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Handling optional parameters in javascript
... == 2) { // if only two arguments were supplied
if (Object.prototype.toString.call(parameters) == "[object Function]") {
callback = parameters;
}
}
//...
}
You can also use the arguments object in this way:
function getData (/*id, parameters, callback*/) {
var id = arguments[...
When is -XAllowAmbiguousTypes appropriate?
...stances, OverlappingInstances #-}
class Foo a where
whichOne :: a -> String
instance Foo a where
whichOne _ = "a"
instance Foo [a] where
whichOne _ = "[a]"
-- |
-- >>> main
-- [a]
main :: IO ()
main = putStrLn $ whichOne (undefined :: [Int])
But GHC is not okay with overlappi...
Cleaning up sinon stubs easily
... sinon-test module. To make the old tests pass you need to configure this extra dependency in each test:
var sinonTest = require('sinon-test');
sinon.test = sinonTest.configureTest(sinon);
Alternatively, you do without sinon-test and use sandboxes:
var sandbox = sinon.sandbox.create();
afterEa...
How to enter a multi-line command
...t is preceded by a valid statement:
return
5
will not work.
Finally, strings (in all varieties) may also extend beyond a single line:
'Foo
bar'
They include the line breaks within the string, then.
share
|
...
Difference between single and double quotes in Bash
...or anyone who doesn't know what "interpolate" means: en.wikipedia.org/wiki/String_interpolation
– Kolob Canyon
May 10 '18 at 17:57
1
...
Python (and Python C API): __new__ versus __init__
...he __new__ method is that the instance variable will start out as an empty string, as opposed to NULL. But why is this ever useful, since if we cared about making sure our instance variables are initialized to some default value, we could have just done that in the __init__ method?
Considering the...
What is the shortest function for reading a cookie by name in JavaScript?
...s or tabs will not become visible. You can avoid this issue by storing the string-value from document.cookie in a variable and check if it is unchanged on each access.
– Andreas
Apr 1 '15 at 15:41
...
How can I use swift in Terminal?
...
5> println(myVariable)
50
6> let label = "The width is "
label: String = "The width is "
7> let width = 94
width: Int = 94
8> let widthLabel = label + String(width)
widthLabel: String = "The width is 94"
9> :exit
GoldCoast:~ macmark$
...
Difference between case object and object
...lt implementations of serialization
a prettier default implementation of toString, and
the small amount of functionality that they get from automatically inheriting from scala.Product.
Pattern matching, equals and hashCode don't matter much for singletons (unless you do something really degener...
Call UrlHelper in models in ASP.NET MVC
...
public class MyModel
{
public int ID { get; private set; }
public string Link
{
get
{
UrlHelper url = new UrlHelper(HttpContext.Current.Request.RequestContext);
return url.Action("ViewAction", "MyModelController", new { id = this.ID });
}
...