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Which regular expression operator means 'Don't' match this character?
...rators, and always follow a matching operator. Thus, a+ means match one or more of a, [a-c0]+ means match one or more of a, b, c or 0, while [^a-c0]+ would match one or more of anything that wasn't a, b, c or 0.
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dynamic_cast and static_cast in C++
...cast. Otherwise, you'll get a NULL pointer.
But B2D casts are a little more complicated. Consider the following code:
#include <iostream>
using namespace std;
class Base
{
public:
virtual void DoIt() = 0; // pure virtual
virtual ~Base() {};
};
class Foo : public Base
{
publi...
How does a public key verify a signature?
...d by the private key, but that this relationship did not work inversely... more specifically, I did not think objects encrypted with the private key could be decrypted by the public key. If that is indeed the case, than this definitely answers my question.
– jcampos8782
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moving changed files to another branch for check-in
...h pop.
There are lots of uses for git stash. This is certainly one of the more useful reasons.
An example:
# work on some code
git stash
git checkout correct-branch
git stash pop
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How to create a new java.io.File in memory?
...atic and tell what the user could do instead. Andreas’ answer is clearly more thorough and a better (attempt at an) answer.
– haraldK
Jan 17 at 12:11
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Why does MYSQL higher LIMIT offset slow the query down?
Scenario in short: A table with more than 16 million records [2GB in size]. The higher LIMIT offset with SELECT, the slower the query becomes, when using ORDER BY *primary_key*
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Maven skip tests
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As you noted, -Dmaven.test.skip=true skips compiling the tests. More to the point, it skips building the test artifacts. A common practice for large projects is to have testing utilities and base classes shared among modules in the same project.
This is accomplished by having a module re...
Any reason not to use '+' to concatenate two strings?
...ier to read than ''.join([a, b]).
You are right though that concatenating more than 2 strings with + is an O(n^2) operation (compared to O(n) for join) and thus becomes inefficient. However this has not to do with using a loop. Even a + b + c + ... is O(n^2), the reason being that each concatenatio...
Getting the location from an IP address [duplicate]
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What is the difference between JAX-RS and JAX-WS?
... it communicates.
On the point about WSDL and API definitions, REST will more frequently use the URI structure and HTTP commands to define the API rather than message types, as is done in the JAX-WS. This means that you don't need to publish a WSDL document so that other users of your service can ...