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Call Javascript function from URL/address bar
...Official Build) (64-bit). Chrome automatically strips the javascript: prefix from the address bar.
– stomy
Mar 17 at 18:03
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What is Hindley-Milner?
...advantages of Hindley-Milner are
It supports polymorphic functions; for example, a function that can give you the length of the list independent of the type of the elements, or a function does a binary-tree lookup independent of the type of keys stored in the tree.
Sometimes a function or value ca...
What does `void 0` mean? [duplicate]
...
What does void 0 mean?
void[MDN] is a prefix keyword that takes one argument and always returns undefined.
Examples
void 0
void (0)
void "hello"
void (new Date())
//all will return undefined
What's the point of that?
It seems pretty useless, doesn't it? If it alw...
What is the advantage of using forwarding references in range-based for loops?
...
The only advantage I can see is when the sequence iterator returns a proxy reference and you need to operate on that reference in a non-const way. For example consider:
#include <vector>
int main()
{
std::vector<bool> v(10);
for (auto& e : v)
e = true;
}
This ...
“Failed to load platform plugin ”xcb“ ” while launching qt5 app on linux without qt installed
I wrote application for linux which uses Qt5.
17 Answers
17
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How do I sort an array of hashes by a value in the hash?
This Ruby code is not behaving as I would expect:
4 Answers
4
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Line continuation for list comprehensions or generator expressions in python
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[x
for
x
in
(1,2,3)
]
works fine, so you can pretty much do as you please. I'd personally prefer
[something_that_is_pretty_long
for something_that_is_pretty_long
in somethings_that_are_pretty_long]
The reason why...
What is the purpose of the single underscore “_” variable in Python?
..._ has 5 main conventional uses in Python:
To hold the result of the last executed expression(/statement) in an interactive
interpreter session. This precedent was set by the standard CPython
interpreter, and other interpreters have followed suit
As a general purpose "throwaway" variable name to ind...
How does having a dynamic variable affect performance?
...namic used as a parameter or rather those lines with dynamic behavior/context(?)
Here's the deal.
For every expression in your program that is of dynamic type, the compiler emits code that generates a single "dynamic call site object" that represents the operation. So, for example, if you have:
...
get dictionary key by value
... lookup. You can do something like this:
var myKey = types.FirstOrDefault(x => x.Value == "one").Key;
If values are unique and are inserted less frequently than read, then create an inverse dictionary where values are keys and keys are values.
...