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How to compare types
....GetType();
if (typeOfa == typeof(A)) {
}
typeof returns the Type object from a given class.
But if you have a type B, that inherits from A, then this comparison is false. And you are looking for IsAssignableFrom.
class B : A {
}
var b = new B();
var typeOfb = b.GetType();
if (typeOfb == typeof...
Mocha / Chai expect.to.throw not catching thrown errors
...also be a big advantage of arrow functions. Arrow functions 'inherit' this from the scope they where created in. Often this can be an advantage, as it avoid the need for binding functions to their this object manually.
– Stijn de Witt
Jan 30 '19 at 18:43
...
How to retrieve Request Payload
....
php://input is a read-only stream that allows you to read raw data
from the request body. In the case of POST requests, it is preferable
to use php://input instead of $HTTP_RAW_POST_DATA as it does not
depend on special php.ini directives. Moreover, for those cases where
$HTTP_RAW_POST...
Expand div to max width when float:left is set
...'ve found of doing this is not very obvious. You need to remove the float from the second column, and apply overflow:hidden to it. Although this would seem to be hiding any content that goes outside of the div, it actually forces the div to stay within its parent.
Using your code, this is an exam...
Regular vs Context Free Grammars
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First: Regular grammars can be ambiguous (example from Kai Kuchenbecker: S -> aA | aB, B -> a, A -> a). The only thing is that there is only one way the nodes in the syntax tree can be positioned (for instance the associativity ambiguity does not exist when a regula...
How to pass arguments into a Rake task with environment in Rails? [duplicate]
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Just for completeness, here the example from the docs mentioned above:
task :name, [:first_name, :last_name] => [:pre_name] do |t, args|
args.with_defaults(:first_name => "John", :last_name => "Dough")
puts "First name is #{args.first_name}"
...
How to format a JavaScript date
...delimited date formats, you have to pull out the date (or time)
components from a DateTimeFormat object (which is part of the
ECMAScript Internationalization API), and then manually create a string
with the delimiters you want.
To do this, you can use DateTimeFormat#formatToParts. You could
destruct...
JNI converting jstring to char *
I have passed a URL string from Java to C code as jstring data type through the use of JNI. And my library method needs a char * as url.
...
Confused about __str__ on list in Python [duplicate]
Coming from a Java background, I understand that __str__ is something like a Python version of toString (while I do realize that Python is the older language).
...
What does “Protocol … can only be used as a generic constraint because it has Self or associated typ
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Protocol Observing inherits from protocol Hashable, which in turn inherits from protocol Equatable. Protocol Equatable has the following requirement:
func ==(lhs: Self, rhs: Self) -> Bool
And a protocol that contains Self somewhere inside it canno...