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Associativity of “in” in Python?
...x in y in z!
The following are equivalent:
1 in [] in 'a'
# <=>
middle = []
# False not evaluated
result = (1 in middle) and (middle in 'a')
(1 in []) in 'a'
# <=>
lhs = (1 in []) # False
result = lhs in 'a' # False in 'a' - TypeError
1 in ([] in 'a')
# <...
How do I check if a type is a subtype OR the type of an object?
... types are the same, here's a sample LINQPad program that demonstrates:
void Main()
{
typeof(Derived).IsSubclassOf(typeof(Base)).Dump();
typeof(Base).IsSubclassOf(typeof(Base)).Dump();
}
public class Base { }
public class Derived : Base { }
Output:
True
False
Which indicates that Deri...
Why can't non-default arguments follow default arguments?
...s are not. Syntactically, it would be impossible for the interpreter to decide which values match which arguments if mixed modes were allowed. A SyntaxError is raised if the arguments are not given in the correct order:
Let us take a look at keyword arguments, using your function.
def fun1(a="who ...
How to send cookies in a post request with the Python Requests library?
... Is this code supposed to place a cookie in my browser? I tried it and it didn't work for me.
– Chris Nielsen
Aug 8 '17 at 20:47
17
...
Reading a string with scanf
...ry pointer. I think the C implementation on the Symbolics "Lisp Machines" did something like this.)
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Using ping in c#
...) { .. } and are early returns so evil?
– Peter Schneider
Jan 31 '19 at 17:56
2
There's no point ...
How to replace a whole line with sed?
... var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled...
What's the difference between globals(), locals(), and vars()?
...locals and vars could use some more explanation. If locals() is called inside a function, it updates a dict with the values of the current local variable namespace (plus any closure variables) as of that moment and returns it. Multiple calls to locals() in the same stack frame return the same dict ...
Collection that allows only unique items in .NET?
...ooking for. From MSDN (emphasis added):
The HashSet<T> class provides high-performance set operations. A set is a collection that contains no duplicate elements, and whose elements are in no particular order.
Note that the HashSet<T>.Add(T item) method returns a bool -- true if the...
curl_exec() always returns false
...ween two development environments with self-assigned certificates.
With valid certificates there is no need to set VERIFYHOST and VERIFYPEER to false because the curl_exec($ch) method will work and return the response you expect.
...