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海量数据相似度计算之simhash短文本查找 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...快的返回一个value，这个号称查找速度最快的数据结构是如何实现的呢？看下hashmap的内部结构：
如果我们需要得到key对应的value，需要经过这些计算，传入key，计算key的hashcode，得到7的位置；发现7位置对应的value还有好几个，...
How to get domain URL and application name?
...n they will not be relative to the <base> anymore, but to the domain root instead.
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cscope or ctags why choose one over the other? [closed]
... there any way to make ctags more accurate? I did make tags in the kernel root dir and have been playing with jumping around and most of the time end up in the wrong place. I read that ctags has problems with the c preprocessor, but considering that ctags is used in lxr there obviously must be som...
How to use double or single brackets, parentheses, curly braces
...ojects, I can specify file paths as script input/output. if I specify $SRC_ROOT/myFile.txt or ${SRC_ROOT}/myFile.txt (SRC_ROOT var is exported by the build system) - doesn't work. only $(SRC_ROOT)/myFile.txt works. What could be the reason? clearly var name isn't a command?
– M...
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)
...
Find all storage devices attached to a Linux machine [closed]
...setups such as EC2 xvda devices.
Here is a dump for a m1.large instance:
root@ip-10-126-247-82:~# fdisk -l
Disk /dev/xvda1: 10.7 GB, 10737418240 bytes
255 heads, 63 sectors/track, 1305 cylinders, total 20971520 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 byt...
Sort points in clockwise order?
...
+1: No atan(), no square root, and even no divisions. This is a good example of computer graphics thinking. Cull off all the easy cases as soon as possible, and even in the hard cases, compute as little as possible to know the required answer.
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How to specify an area name in an action link?
...r is to pass route Values, if you pass an empty parameter it will consider root structure and if you pass appropriate value it use it as area.
Also do not forget to use null or new{} as the 5th parameter because passing null or new {} while creating action link will not overload method for (text,ac...
Load view from an external xib file in storyboard
...you want to use it in your storyboard, add a UIView as you normally would, select the newly added view, go to the Identity Inspector (the third icon on the upper right that looks like a rectangle with lines in it), and enter your subclass's name in as the "Class" under "Custom Class".
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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...