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Downcasting in Java
Upcasting is allowed in Java, however downcasting gives a compile error.
11 Answers
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C++ template typedef
...ation of typedef, allowing templates:
template <size_t N>
using Vector = Matrix<N, 1>;
The type Vector<3> is equivalent to Matrix<3, 1>.
In C++03, the closest approximation was:
template <size_t N>
struct Vector
{
typedef Matrix<N, 1> type;
};
Here, t...
Two color borders
Client wants two color borders for an embossed look. Can I do this on one element? I was hoping to avoid stacking two DOM elements with individual borders.
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How to install python3 version of package via pip on Ubuntu?
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This works for me. Two additions: You can leave the virtualenv with deactivate and python3 might be installed at a different location. Mine is at /usr/local/bin/python3, which you can find out with which python3
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Git: Permission denied (publickey) fatal - Could not read from remote repository. while cloning Git
I am unable to clone a Git repository, and getting this error:
30 Answers
30
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difference between use and require
...oaded), use does the same plus it refers to their namespaces with clojure.core/refer (so you also get the possibility of using :exclude etc like with clojure.core/refer). Both are recommended for use in ns rather than directly.
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Read stream twice
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You can use org.apache.commons.io.IOUtils.copy to copy the contents of the InputStream to a byte array, and then repeatedly read from the byte array using a ByteArrayInputStream. E.g.:
ByteArrayOutputStream baos = new ByteArrayOutputStr...
rgdal package installation
...ave found already a pretty nice example here , but rather how to make it work. In fact, I am unable to load library rgdal :
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REST, HTTP DELETE and parameters
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No, it is not RESTful. The only reason why you should be putting a verb (force_delete) into the URI is if you would need to overload GET/POST methods in an environment where PUT/DELETE methods are not available. Judging from your use of the DELETE method, this is not the case.
HTTP error code 409/...
Forking vs. Branching in GitHub
I'd like to know more about the advantages and disadvantages of forking a github project vs. creating a branch of a github project.
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