matching | 易学教程

Git的常用命令

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Git常用命令汇总以及其它相关操作一、常用的git命令 --文件目录操作命令 1 mkdir * 创建一个空目录 *指目录名 2 pwd 显示当前目录的路径。 3 cat * 查看*文件内容 4 git rm * 删除**文件 --git初始化操作 1 git init 把当前的目录变成git仓库，生成隐藏.git文件。 2 git remote add origin url 把本地仓库的内容推送到GitHub仓库。 3 git clone git@url/test.git 从远程库克隆 4 git add * 把x文件添加到暂存区去。 5 git commit –m "*" 提交文件 –m 后面的是注释。 --git 克隆分支 1 git clone xxx.git 最简单直接的命令 2 git clone xxx.git "指定目录" clone到指定目录 3 git clone -b branchname xxx.git clone时创建新的分支替代默认Origin HEAD（master） --clone 远程分支　　 git clone 命令默认的只会建立master分支，如果你想clone指定的某一远程分支(如：dev)的话，可以如下： 1. 查看所有分支(包括隐藏的) git branch -a 显示所有分支　　　　 1 * master 2 remotes

Partial animal string matching in R

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问题 I have a dataframe, d<-data.frame(name=c("brown cat", "blue cat", "big lion", "tall tiger", "black panther", "short cat", "red bird", "short bird stuffed", "big eagle", "bad sparrow", "dog fish", "head dog", "brown yorkie", "lab short bulldog"), label=1:14) I'd like to search the name column and if the words "cat", "lion", "tiger", and "panther" appear, I want to assign the character string feline to a new column and corresponding row species . If the words "bird", "eagle", and "sparrow"

Improve matching of feature points with OpenCV

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问题 I want to match feature points in stereo images. I've already found and extracted the feature points with different algorithms and now I need a good matching. In this case I'm using the FAST algorithms for detection and extraction and the BruteForceMatcher for matching the feature points. The matching code: vector< vector<DMatch> > matches; //using either FLANN or BruteForce Ptr<DescriptorMatcher> matcher = DescriptorMatcher::create(algorithmName); matcher->knnMatch( descriptors_1,

Check if value exists in column in VBA

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问题 I have a column of numbers of over 500 rows. I need to use VBA to check if variable X matches any of the values in the column. Can someone please help me? 回答1: If you want to do this without VBA, you can use a combination of IF , ISERROR , and MATCH . So if all values are in column A, enter this formula in column B: =IF(ISERROR(MATCH(12345,A:A,0)),"Not Found","Value found on row " & MATCH(12345,A:A,0)) This will look for the value "12345" (which can also be a cell reference). If the value isn

How to pair socks from a pile efficiently?

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问题 Yesterday I was pairing the socks from the clean laundry and figured out the way I was doing it is not very efficient. I was doing a naive search — picking one sock and "iterating" the pile in order to find its pair. This requires iterating over n/2 * n/4 = n 2 /8 socks on average. As a computer scientist I was thinking what I could do? Sorting (according to size/color/...) of course came to mind to achieve an O(NlogN) solution. Hashing or other not-in-place solutions are not an option,

Java repetitive pattern matching (2)

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问题 Consider the following regex: (([^\|])*\|)*([^\|]*) This matches repetitive string patterns of the type ("whatever except |" |) {0 to any times} ("whatever except |" |) {1 time} So it should match the following String, which has 17 substrings (16 repeated, plus " z" as the last one). "abcd | e | fg | hijk | lmnop | | | qrs | t| uv| w |||||x y| z" Indeed, RegexPal verifies that the given regex does match the above string. Now, I want to get each of the substrings (i.e., "abcd |", "e |", "fg |"

Wildcard matching in Python

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问题 I have a class called Pattern, and within it two methods, equates and setwildcard. Equates returns the index in which a substring first appears in a string, and setwildcard sets a wild card character in a substring So p = Pattern('xyz') t = 'xxxxxyz' p.equates(t) Returns 4 Also p = Pattern('x*z', '*') t = 'xxxxxgzx' p.equates(t) Returns 4, because * is the wildcard and can match any letter within t, as long as x and z match. What's the best way to implement this? 回答1: It looks like you're

XPath query to match depending on combinations of child elements

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问题 Given the following XML Snippet <Events> <Event> <DateTime>22.09.2009 11:27:18</DateTime> <EventType>Download</EventType> </Event> What is the XPath query to return all Events created today of type download? 回答1: /Events/Event[starts-with(DateTime, '22.09.2009') and EventType='Download'] Since I assume that this is a follow-up to your previous question, you might want to use this snippet instead of SelectSingleNode to get all events in a file (if there can be multiple): foreach

Pattern matching in VBS

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问题 Using this as a reference: https://msdn.microsoft.com/en-us/library/ms974570.aspx#scripting05_topic2 I've been trying to figure out how to create a pattern to pull this: LicenseDetail.asp?SID=&id=F1A32D21A83C2BB2BBF227E5443A6023 Out of this: height='40'><td colspan='1' width='20%' align='center'bgcolor='#e9edf2'><font face=verdana color=#000000 size=-1>Real Estate Broker or Sales</font></td><td colspan='1' align='center' bgcolor='#e9edf2'><font face=verdana color=#000000 size=-1><a href=

MYSQL checking all values in a set match another set

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问题 I have two tables A and B with values below Table A X ------ 1 2 3 Table B X Y ------ ------ 1 A 2 A 3 A 1 B 2 B 1 C 3 D I need to find only the Y values from Table B which match All of the values in Table A. So for the above example the only Y value that matches is A (A has an X value of 1,2,and 3) 回答1: This is an example of a "set-within-sets" subquery. I like to approach this with aggregation and a having clause. select b.y from tableB b join tableA a on b.X = a.X group by b.y having count