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What do the parentheses around a function name mean?
...
In the absence of any preprocessor stuff going on, foo's signature is equivalent to
int foo (int *bar)
The only context in which I've seen people putting seemingly unnecessary parentheses around function names is when there are both a function and a function-like macro wit...
How do I implement IEnumerable
...>'s GetEnumerator in the explicit implementation of IEnumerable:
class FooCollection : IEnumerable<Foo>, IEnumerable
{
SomeCollection<Foo> foos;
// Explicit for IEnumerable because weakly typed collections are Bad
System.Collections.IEnumerator IEnumerable.GetEnumerator(...
How do you send a HEAD HTTP request in Python 2?
...an determine the MIME type. I want to be able to see if http://somedomain/foo/ will return an HTML document or a JPEG image for example. Thus, I need to figure out how to send a HEAD request so that I can read the MIME type without having to download the content. Does anyone know of an easy way of...
The difference between bracket [ ] and double bracket [[ ]] for accessing the elements of a list or
... assignment.
Consider the case of data extraction on the following list:
foo <- list( str='R', vec=c(1,2,3), bool=TRUE )
Say we would like to extract the value stored by bool from foo and use it inside an if() statement. This will illustrate the differences between the return values of [] and...
How can I remove the extension of a filename in a shell script?
... %.* will only remove the last extension; if you want to remove all the extensions, use %%.*.
– chepner
Apr 26 '18 at 13:20
2
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What are the calling conventions for UNIX & Linux system calls (and user-space functions) on i386 an
Following links explain x86-32 system call conventions for both UNIX (BSD flavor) & Linux:
4 Answers
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What does 'super' do in Python?
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What's the difference?
SomeBaseClass.__init__(self)
means to call SomeBaseClass's __init__. while
super(Child, self).__init__()
means to call a bound __init__ from the parent class that follows Child in the instance's Method Resolution Order (MRO).
If the instance is a subclass of ...
Java generics T vs Object
...ds of Object.
But with context - if you have a generic class:
MyClass<Foo> my = new MyClass<Foo>();
Foo foo = new Foo();
Then:
Foo newFoo = my.doSomething(foo);
Same code with object
Foo newFoo = (Foo) my.doSomething(foo);
Two advantages:
no need of casting (the compiler hide...
Block Declaration Syntax List
...at this is distinct from "Blocks as Parameters"; in this instance, you're calling a method that wants a block argument with an anonymous block. If you have already declared a block variable, it is sufficient to pass the variable name as the argument.
[someObject doSomethingWithBlock: ^return_type (...
What are the best practices for structuring a large Meteor app with many HTML template files? [close
In all the examples (leaderboard, wordplay, etc.) they have one single HTML template file. Is there some large open source Meteor project with many different HTML template files we can use as a best practice example? Doesn't seem practical to put everything a large app needs all in one template fi...