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What's the best way to get the last element of an array without deleting it?
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option .1. $x = array_values(array_slice($array, -1))[0]; (as suggested by rolacja)
option .2. $x = array_slice($array, -1)[0]; (as suggested by Stoutie)
option .3. $x = array_pop((array_slice($array, -1))); (as suggested by rolacja)
option .4. $x = array_pop((array_slice($array, -1, 1))); (as su...
Sort a list of tuples by 2nd item (integer value) [duplicate]
...sited stackoverflow page of all time; i've been here like easily 500 times by now. Thank you cheeken, if only i could memorize this one line of code.
– will kinsman
Aug 19 at 3:08
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Why does ++[[]][+[]]+[+[]] return the string “10”?
...y A to avoid the wrong notation.
++ before its operand means “increment by one and return the incremented result”. So ++[[]][0] is equivalent to Number(A) + 1 (or +A + 1).
Again, we can simplify the mess into something more legible. Let's substitute [] back for A:
(+[] + 1)
+
[0]
Before +[]...
Using arrays or std::vectors in C++, what's the performance gap?
...operations on vectors and arrays/pointers.
// Assembly code was generated by gcc 4.1.0 invoked with g++ -O3 -S on a
// x86_64-suse-linux machine.
#include <vector>
struct S
{
int padding;
std::vector<int> v;
int * p;
std::vector<int>::iterator i;
};
int pointer_inde...
Calling a Java method with no name
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is static initialization block which is executed when class is loaded by class loader.
So when you run your code
1. Class is loaded by class loader so static initialization block is executed
Output: x is printed
2. Object is created so initialization block is executed and then constuctor i...
Is nested function a good approach when required by only one function? [closed]
Let's say that a function A is required only by function B , should A be defined inside B?
12 Answers
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How can I reconcile detached HEAD with master/origin?
...ch dangling commits will be pruned through the garbage collection process (by default, they are kept for at least 2 weeks and may be kept longer by being referenced by HEAD’s reflog).
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It is perfectly fine to do “normal” work with a detached HEAD, you just have to keep track of what you are ...
what is the difference between OLE DB and ODBC data sources?
...reading a MS Excel help article about pivotcache and wonder what they mean by OLE DB and ODBC sources
11 Answers
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Android-java- How to sort a list of objects by a certain value within the object
Im trying to sort through an arraylist of objects by a particular value within the object. What would be the best approach to do such a thing. Should I use Collections.sort() with some kind of comparator?
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Combined area of overlapping circles
...circles is the area of the polygon + the area of the circle slices defined by consecutive intersection points and the circle center in between them. You'll need to also account for any holes.
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