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How do you use “
...) {
function(x) x ^ exponent
}
square <- power(2)
square(2) # -> [1] 4
square(4) # -> [1] 16
cube <- power(3)
cube(2) # -> [1] 8
cube(4) # -> [1] 64
The ability to manage variables at two levels also makes it possible to maintain the state across function invocations by allow...
How do I get a file extension in PHP?
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1802
People from other scripting languages always think theirs is better because they have a built...
subtract two times in python
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edited Mar 10 '11 at 16:12
bstpierre
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std::shared_ptr thread safety explained
...e only newly created object?
is incorrect. Only d will point to the new A(10), and a, b, and c will continue to point to the original A(1). This can be seen clearly in the following short example.
#include <memory>
#include <iostream>
using namespace std;
struct A
{
int a;
A(int a)...
Do I need a content-type header for HTTP GET requests?
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115
According to the RFC 7231 section 3.1.5.5:
A sender that generates a message containing a ...
Python list iterator behavior and next(iterator)
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199
What you see is the interpreter echoing back the return value of next() in addition to i being...
Cannot add or update a child row: a foreign key constraint fails
table 1
24 Answers
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