大约有 19,000 项符合查询结果（耗时：0.0354秒） [XML]
rbenv not changing ruby version
...pt you are executing and each of its parent directories until reaching the root of your filesystem.
The first .ruby-version file found by searching the current working directory and each of its parent directories until reaching the root of your filesystem. You can modify the .ruby-version file in ...
Get folder name from full file path
...
See DirectoryInfo.Name:
string dirName = new DirectoryInfo(@"c:\projects\roott\wsdlproj\devlop\beta2\text").Name;
share
|
improve this answer
|
follow
|
...
Are tuples more efficient than lists in Python?
...he performance of your program -- remember "premature optimization is the root of all evil").
Python makes this very easy: timeit is your friend.
$ python -m timeit "x=(1,2,3,4,5,6,7,8)"
10000000 loops, best of 3: 0.0388 usec per loop
$ python -m timeit "x=[1,2,3,4,5,6,7,8]"
1000000 loops, best ...
How to show “Done” button on iPhone number pad
...wWillDisappear:animated];
}
- (UIView *)findFirstResponderUnder:(UIView *)root {
if (root.isFirstResponder)
return root;
for (UIView *subView in root.subviews) {
UIView *firstResponder = [self findFirstResponderUnder:subView];
if (firstResponder != nil)
...
What is the relative performance difference of if/else versus switch statement in Java?
...first to determine where the slow spots are. Premature optimization is the root of all evil!
Nevertheless, it's possible to talk about the relative performance of switch vs. if/else with the Java compiler optimizations. First note that in Java, switch statements operate on a very limited domain -- ...
译文：理解Java中的弱引用 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...方面的专家，但是我认为至少你应该了解什么是弱引用，如何使用它们，并且什么场景使用。既然它们是一些不知名的概念，我简单就着前面的三个问题来说明一下。
强引用(Strong Reference)
强引用就是我们经常使用的引用，其...
android fragment- How to save states of views in a fragment when another fragment is pushed on top o
...Exemple follows:
public class AFragment extends Fragment {
private View mRootView;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if(mRootView==null){
mRootView = inflater.inflate(R.id.fragment_a, container, false...
Get class name of object as string in Swift
... like array, a dictionary, an Int, a NSDate, etc.
Because NSObject is the root class of most Objective-C class hierarchies, you could try to make an extension for NSObject to get the class name of every subclass of NSObject. Like this:
extension NSObject {
var theClassName: String {
re...
Find the IP address of the client in an SSH session
...s with non-sudoed users. e.g. if you have an ssh user and then escalate to root, a new shell is created and these variables are lost, unless you can trace back through the tree to find the original ssh pid and get the variables from /proc/$PID/environ
– Andrej
...
proper way to sudo over ssh
...do --prompt="" -S -- whoami << EOF
> <remote_sudo_password>
root
We're telling sudo not to issue a prompt, and to take its input from stdin. This makes the sudo password passing completely silent so the only response you get back is the output from whoami.
This technique has the b...