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How much is the overhead of smart pointers compared to normal pointers in C++?
...
My answer is different from the others and i really wonder if they ever profiled code.
shared_ptr has a significant overhead for creation because of it's memory allocation for the control block (which keeps the ref counter and a pointer list to a...
Force overwrite of local file with what's in origin repo?
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Full sync has few tasks:
reverting changes
removing new files
get latest from remote repository
git reset HEAD --hard
git clean -f
git pull origin master
Or else, what I prefer is that, I may create a new branch with the latest from the remote using:
git checkout origin/master -b <new branch...
What's the difference between dynamic (C# 4) and var?
...l that happened was that the compiler figured out that s must be a string (from the initializer). In both cases, it knows (in the IL) that s.Length means the (instance) string.Length property.
dynamic is a very different beast; it is most similar to object, but with dynamic dispatch:
dynamic s = "...
Regexp Java for password validation
...e back end that will actually use the password.
I'll start with the regex from the accepted answer:
^(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])(?=.*[@#$%^&+=])(?=\S+$).{8,}$
First of all, since Java supports \A and \z I prefer to use those to make sure the entire string is validated, independently of...
In Objective-C, what is the equivalent of Java's “instanceof” keyword?
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From Wikipedia:
In Objective-C, for example, both the
generic Object and NSObject (in
Cocoa/OpenStep) provide the method
isMemberOfClass: which returns true if
the argument to the method is an
instance of the sp...
PUT vs. POST in REST
...stomer” resource with a
different mailing address field value.
taken from REST API Design - Resource Modeling by Prakash Subramaniam of Thoughtworks
This forces the API to avoid state transition problems with multiple clients updating a single resource, and matches more nicely with event sour...
Can you find all classes in a package using reflection?
...is method1 that uses the ClassLoader.
/**
* Scans all classes accessible from the context class loader which belong to the given package and subpackages.
*
* @param packageName The base package
* @return The classes
* @throws ClassNotFoundException
* @throws IOException
*/
private static Cla...
Can you attach Amazon EBS to multiple instances?
... only "go down" in the sense that to access it, you will need to detach it from the down instance and reattach it to a new instance.
– Dave Dopson
Feb 28 '11 at 4:32
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Officially, what is typename for?
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Following is the quote from Josuttis book:
The keyword typename was introduced to
specify that the identifier that
follows is a type. Consider the
following example:
template <class T>
Class MyClass
{
typename T::SubType * ptr;
...
BCL (Base Class Library) vs FCL (Framework Class Library)
...easier. While these classes are themselves written in C#, they can be used from any CLRbased language
You'll be using the BCL with some parts of the FCL with each project type. So System.Windows.Forms (a separate library) or System.Web, with the BCL from mscorlib and System.dll
...