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How to delete a folder with files using Java
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Java isn't able to delete folders with data in it. You have to delete all files before deleting the folder.
Use something like:
String[]entries = index.list();
for(String s: entries){
File currentFile = new File(index.getPath(),s);
currentFile.delete();
}
Then you should be able to ...
Convert a matrix to a 1 dimensional array
I have a matrix (32X48).
10 Answers
10
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Split by comma and strip whitespace in Python
...x.strip() for x in text.split('.') if x != '']
– RandallShanePhD
Jul 28 '17 at 19:41
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could not resolve host github.com error while cloning remote repository in git
...me/password -- in clear in the proxy URL, see below)
Note the NO_PROXY, to allow to access internal site to your company
You also can register that in your git config:
git config --global http.proxy http://<login_internet>:<password_internet>@aproxy:aport
But if you have incorrect proxy...
Applicatives compose, monads don't
...t a value in s can determine the behaviour of a computation in m t. Monads allow interference between the value and computation layers. The (<*>) operator allows no such interference: the function and argument computations don't depend on values. This really bites. Compare
miffy :: Monad m =&...
What is the behavior of integer division?
...88) If the quotient a/b is representable, the expression
(a/b)*b + a%b shall equal a.
and the corresponding footnote:
88) This is often called ‘‘truncation toward zero’’.
Of course two points to note are:
3 The usual arithmetic conversions are performed on the operands.
and:
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C++虚继承的概念 - C/C++ - 清泛网 - 专注C/C++及内核技术
...blic Sub //定义一个类Child 分别继承自 Base ，Sub
31: {
32: public:
33: Child(){cout << "Child called..." << endl;}
34: private:
35: };
36:
37: int main(int argc, char* argv[])
38: {
39: Child c;
40:
41: //不能这样使用，会产生二意性...
AI2 SideBar Extension
Deutsche Version Motivation With smaller apps, the implemented functions can be triggered by a button. With larger apps, however, the available space quickly decreases and the layout becomes confusing. A side bar can help here. There are a number of implementations, but I haven't found a su...
How to get the screen width and height in iOS?
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Orientation is really managed at the view controller level. Take a look at Managing a View Controller's Interface Orientation. So yes, look at your view controller's interfaceOrientation property. BTW, you asked about the screen size, so that...
Remove a fixed prefix/suffix from a string in Bash
... argument list, and
There are no spaces in $prefix and $suffix
It's generally good practice to quote a string on the command line because even if it contains spaces it will be presented to the command as a single argument. We quote $prefix and $suffix for the same reason: each edit command to sed ...