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How do I make the method return type generic?
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You could define callFriend this way:
public <T extends Animal> T callFriend(String name, Class<T> type) {
return type.cast(friends.get(name));
}
Then call it as such:
jerry.callFriend("spike", Dog.class).bark();
jerry.cal...
Is there any way to see the file system on the iOS simulator?
...ication will be the most recent since it just changed the directory...
Inside the directory is everything related to your application. You can even drop files in there between runs, to revert back to a stored database in a known state for example...
I go there often enough I keep the iPhone Simul...
How to print out more than 20 items (documents) in MongoDB's shell?
... answered Feb 23 '11 at 17:56
SridharSridhar
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How to convert a number to string and vice versa in C++
...ter representation of the value of its argument that would be generated by calling sprintf(buf, fmt, val) with a format specifier of "%d", "%u", "%ld", "%lu", "%lld", "%llu", "%f", "%f", or "%Lf", respectively, where buf designates an internal character buffer of sufficient size." I had a look at th...
What's the meaning of interface{}?
...plement at least zero methods, and satisfying an interface is done automatically, all types satisfy the empty interface.
That means that if you write a function that takes an interface{} value as a parameter, you can supply that function with any value.
(That is what Msg represents in your quest...
Check if an element contains a class in JavaScript?
...d achieve the same effect with this code:
var test = document.getElementById("test"),
classes = ['class1', 'class2', 'class3', 'class4'];
test.innerHTML = "";
for(var i = 0, j = classes.length; i < j; i++) {
if(hasClass(test, classes[i])) {
test.innerHTML = "I have " + classes[...
COALESCE Function in TSQL
...cription of the details here
http://www.mssqltips.com/sqlservertip/2689/deciding-between-coalesce-and-isnull-in-sql-server/
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What is “runtime”?
... term, describing the code produced by any library. Runtime code is specifically the code required to implement the features of the language itself.
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Difference between static class and singleton pattern?
...e Foo, and you have a method taking a Foo as a parameter. With that setup, callers can choose to use the singleton as the implementation - or they could use a different implementation. The method is decoupled from the singleton. Compare that with the situation where the class just has static methods...
When should I use C++14 automatic return type deduction?
...asurements. To the small extent that anyone ever comes up with any statistically significant and generally-applicable results, they are completely ignored by working programmers, in favour of the author's instincts of what is "readable".
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