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Why are arrays covariant but generics are invariant?
...th a List<Animal> - you can add any animal to it... including a cat. Now, can you logically add a cat to a litter of puppies? Absolutely not.
// Illegal code - because otherwise life would be Bad
List<Dog> dogs = new List<Dog>();
List<Animal> animals = dogs; // Awooga awooga...
Reading a string with scanf
...and although not necessarily the &str is also the same memory address. Now strPtr points to str so the memory address stored inside of strPtr is the same as str and thats 12fe60. Finally &strPtr is the address of the variable strPtr, this is not the value stores in strptr but the actual memo...
In Javascript/jQuery what does (e) mean?
...unction, "function(e)", and assign the resulting object to a handler, "e". Now take that handler and call one of its methods, "e.preventDefault()", which should prevent the browser from performing the default action for that element.
Note: The handle can pretty much be named anything you want (i.e....
git produces Gtk-WARNING: cannot open display
...
Now I'm getting a error: RPC failed; result=22, HTTP code = 417
– pmiranda
Jun 14 '17 at 14:30
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Creating a DateTime in a specific Time Zone in c#
...
I don't know of any equivalent SQL Server construct, I'm afraid. I would suggest having the time zone name as one column, and the UTC value in another column. Fetch them separately and then you can create instances fairly easily.
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How do I Sort a Multidimensional Array in PHP [duplicate]
...C ? -1 : 1;
// If a projection was defined project the values now
if ($projection) {
$lhs = call_user_func($projection, $first[$column]);
$rhs = call_user_func($projection, $second[$column]);
}
else {
$l...
How to create your own library for Android development to be used in every program you write?
...ipse, enter Project Properties -> Android and check isLibrary property. Now you can add this library to your Android Application project by adding it to list on the same property page.
More detailed instructions here in Working with Library Projects section
...
Java compile speed vs Scala compile speed
...ing from Scala 2.7 to Scala 2.8, and I expect the improvements to continue now that the dust has settled on 2.8. This page documents some of the ongoing efforts and ideas to improve the performance of the Scala compiler.
Martin Odersky provides much more detail in his answer.
...
Difference between knockout View Models declared as object literals vs functions
...removeItem = function(item) {
self.items.remove(item);
}
};
Now, if you are in the scope of an individual item and call $root.removeItem, the value of this will actually be the data being bound at that level (which would be the item). By using self in this case, you can ensure that i...
How can I add some small utility functions to my AngularJS application?
...be services, the old answer I think is still a good one.
What I would do now is:
app.js:
var MyNamespace = MyNamespace || {};
MyNamespace.helpers = {
isNotString: function(str) {
return (typeof str !== "string");
}
};
angular.module('app', ['app.controllers', 'app.services']). ...