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Simple explanation of clojure protocols
...eployed, separately type checked. We want them to be type-safe. [Note: not all of these make sense in all languages. But, for example, the goal to have them type-safe makes sense even in a language like Clojure. Just because we can't statically check type-safety doesn't mean that we want our code to...
Get next / previous element using JavaScript?
... page
var selectionDiv = document.getElementById("MySecondDiv");
So basically with selectionDiv iterate through the collection to find its index, and then obviously -1 = previous +1 = next within bounds
for(var i = 0; i < divs.length;i++)
{
if(divs[i] == selectionDiv)
{
var previous...
How do I mock a service that returns promise in AngularJS Jasmine unit test?
... then: function (callback) {
return callback({'foo' : "bar"});
}
};
});
//act
var result = service.actionUnderTest(); // does cleverness
//assert
expect(spy).toHaveBeenCalled();
}...
Can I call a base class's virtual function if I'm overriding it?
Say I have classes Foo and Bar set up like this:
7 Answers
7
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How do I read from parameters.yml in a controller in symfony2?
... can call getParameter directly, with no DI. I.e.: $this->getParameter('foo'). That's what I did to make it work in SF 4.8.
– Ricardo Martins
May 24 at 22:36
add a comment
...
error: request for member '..' in '..' which is of non-class type
...
Foo foo2();
change to
Foo foo2;
You get the error because compiler thinks of
Foo foo2()
as of function declaration with name 'foo2' and the return type 'Foo'.
But in that case If we change to Foo foo2 , the compiler ...
How to write a test which expects an Error to be thrown in Jasmine?
... not possible"));
you should be passing a function into the expect(...) call. Your incorrect code:
// incorrect:
expect(parser.parse(raw)).toThrow(new Error("Parsing is not possible"));
is trying to actually call parser.parse(raw) in an attempt to pass the result into expect(...),
...
Is it possible to override JavaScript's toString() function to provide meaningful output for debuggi
...You can override toString in Javascript as well. See example:
function Foo() {}
// toString override added to prototype of Foo class
Foo.prototype.toString = function() {
return "[object Foo]";
}
var f = new Foo();
console.log("" + f); // console displays [object Foo]
See this discussi...
Increment value in mysql update query
...
Also, to "increment" string, when update, use CONCAT
update dbo.test set foo=CONCAT(foo, 'bar') where 1=1
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Pure JavaScript Send POST Data Without a Form
... that using FormData object as following:
data = new FormData()
data.set('Foo',1)
data.set('Bar','boo')
let request = new XMLHttpRequest();
request.open("POST", 'some_url/', true);
request.send(data)
now you can handle the data on the server-side just like the way you deal with reugular HTML For...