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Shallow copy of a Map in Java
...It's always better to copy using a copy constructor. clone() in Java is broken (see SO: How to properly override clone method?).
Josh Bloch on Design - Copy Constructor versus Cloning
If you've read the item about cloning in my book, especially if you read between the lines, you will know that ...
Are string.Equals() and == operator really same? [duplicate]
...lder("hello").ToString();
if (x.Equals(y)) // Yes
// The compiler doesn't know to call ==(string, string) so it generates
// a reference comparision instead
if (x == y) // No
string xs = (string) x;
string ys = (string) y;
// Now *this* will call ==(string, string), comparing values appropriately...
Why can I use auto on a private type?
... most part, the same as for template type deduction. The example posted works for the same reason you can pass objects of private types to template functions:
template <typename T>
void fun(T t) {}
int main() {
Foo f;
fun(f.Baz()); // ok
}
And why can we pass objects of pri...
Are parameters in strings.xml possible? [duplicate]
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Christopher OrrChristopher Orr
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MySQL Like multiple values
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The (a,b,c) list only works with in. For like, you have to use or:
WHERE interests LIKE '%sports%' OR interests LIKE '%pub%'
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Multiple lines of input in
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Ólafur WaageÓlafur Waage
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GCC -fPIC option
...ode is not dependent on being located at a specific address in order to work.
E.g. jumps would be generated as relative rather than absolute.
Pseudo-assembly:
PIC: This would work whether the code was at address 100 or 1000
100: COMPARE REG1, REG2
101: JUMP_IF_EQUAL CURRENT+10
...
111: NOP
Non...
String isNullOrEmpty in Java? [duplicate]
This surely has been asked before, but Googling doesn't find it . Is there, in any of the standard java libraries (including apache/google/...), a static isNullOrEmpty() method for Strings ?
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String vs. StringBuilder
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Yes, the performance difference is significant. See the KB article "How to improve string concatenation performance in Visual C#".
I have always tried to code for clarity first, and then optimize for performance later. That's much easier than doing it the other way around! Howev...
How do I rename a repository on GitHub?
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If you are the only person working on the project, it's not a big problem, because you only have to do #2.
Let's say your username is someuser and your project is called someproject.
Then your project's URL will be1
git@github.com:someuser/someproject....