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Why is the clone() method protected in java.lang.Object?
...CloneNotSupportedException. So you do need be Cloneable if you're going to call super.clone() (resulting in Object.clone() being called). I don't see how an object can be serialized without implementing Serializable.
– Steve Kuo
Jul 16 '09 at 17:00
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Is it possible to get element from HashMap by its position?
...Integer, String>();
Define like this and.
private Entry getEntry(int id){
Iterator iterator = map.entrySet().iterator();
int n = 0;
while(iterator.hasNext()){
Entry entry = (Entry) iterator.next();
if(n == id){
return entry;
...
What does the restrict keyword mean in C++?
...g
A restrict-qualified pointer (or reference)...
! ...is basically a
promise to the compiler that for the
scope of the pointer, the target of the pointer will only
be accessed through that pointer (and pointers copied
from it).
In C++ compilers that support it ...
What do the parentheses around a function name mean?
...
How would such a function be called? Would you call it with the parentheses as well? For example, would this work: (isdigit)(5)?
– gcochard
Dec 5 '12 at 19:14
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How do I calculate a point on a circle’s circumference?
... trying to derive this equation for an hour now. Thanks. Who know the trig identities you learned in high school would be so helpful.
– Isioma Nnodum
May 28 '14 at 22:37
1
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Compression/Decompression string with C#
... I just want to emphasize that the GZipStream must be disposed before calling ToArray() on the output stream. I ignored that bit, but it makes a difference!
– Wet Noodles
Jan 23 '14 at 19:41
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How to get URL of current page in PHP [duplicate]
..._URI']; ?>
if the current url was http://domain.com/some-slug/some-id, echo will return only '/some-slug/some-id'.
if you want the full url, try this:
<?php echo 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI']; ?>
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What does the @ symbol represent in objective-c?
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The @ character isn't used in C or C++ identifiers, so it's used to introduce Objective-C language keywords in a way that won't conflict with the other languages' keywords. This enables the "Objective" part of the language to freely intermix with the C or C++ par...
virtualenv --no-site-packages and pip still finding global packages?
...omething like /usr/local/bin/pip, meaning that when we do pip freeze it is calling this binary instead of mytest/bin/pip.
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Why malloc+memset is slower than calloc?
It's known that calloc is different than malloc in that it initializes the memory allocated. With calloc , the memory is set to zero. With malloc , the memory is not cleared.
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