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Would it be beneficial to begin using instancetype instead of id?
...n and explain why it's a good idea.
First, some definitions:
@interface Foo:NSObject
- (id)initWithBar:(NSInteger)bar; // initializer
+ (id)fooWithBar:(NSInteger)bar; // class factory
@end
For a class factory, you should always use instancetype. The compiler does not automatically convert i...
Difference between Mock / Stub / Spy in Spock test framework
...")
and: "check behaviour exactly 3 times"
mockSubscriber.receive("foo") == "hey"
mockSubscriber.receive("bar") == "ho"
mockSubscriber.receive("zot") == "ho"
}
def "Spies can have interactions"() {
given:
def spySubscriber = Spy(MySubscriber)
publisher.addSubscriber(...
Are PDO prepared statements sufficient to prevent SQL injection?
...nguage), i.e. this does not work:
$stmt = $dbh->prepare('SELECT * FROM foo ORDER BY :userSuppliedData');
The reason why the above does not work is because DESC and ASC are not data. PDO can only escape for data. Secondly, you can't even put ' quotes around it. The only way to allow user chosen...
How do you parse and process HTML/XML in PHP?
...1)->class = 'bar';
$html->find('div[id=hello]', 0)->innertext = 'foo';
echo $html;
Extract content from HTML:
// Dump contents (without tags) from HTML
echo file_get_html('http://www.google.com/')->plaintext;
Scraping Slashdot:
// Create DOM from URL
$html = file_get_html('ht...
Why is TypedReference behind the scenes? It's so fast and safe… almost magical!
...need for this feature internally for interop (e.g. [DllImport("...")] void Foo(__arglist);) and they implemented it in C# for their own use. Design of the CLI is influenced by a lot of languages (annotations "The Common Language Infrastructure Annotated Standard" demonstrate this fact.) Being a suit...
Is a statically-typed full Lisp variant possible?
...here all the cells are of the same type. Lisp happily allows (1 "abc" #\d 'foo). Plus, even if you extend your static-typed lists to cover lists-of-lists, the type of these objects requires that every element of the list is a sublist. How would you represent ((1 2) 3 4) in them?
Lisp conses form a ...
multi-step registration process issues in asp.net mvc (split viewmodels, single model)
...ic class Step1ViewModel: IStepViewModel
{
[Required]
public string Foo { get; set; }
}
[Serializable]
public class Step2ViewModel : IStepViewModel
{
public string Bar { get; set; }
}
[Serializable]
public class Step3ViewModel : IStepViewModel
{
[Required]
public string Baz { ge...
Asking the user for input until they give a valid response
...e with a RuntimeError: maximum recursion depth exceeded. You may think "no fool would make 1000 mistakes in a row", but you're underestimating the ingenuity of fools!
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Why shouldn't all functions be async by default?
...
@talkol How is await FooAsync() simpler than Foo()? And instead of small domino effect some of the time, you have huge domino effect all the time and you call that an improvement?
– svick
Aug 28 '13 at 23:52...
Pointers vs. values in parameters and return values
...to create your items might force pointers on you, e.g. you have to call NewFoo() *Foo rather than let Go initialize with the zero value.
The desired lifetimes of the items might not all be the same. The whole slice is freed at once; if 99% of the items are no longer useful but you have pointers to t...