match

问题 I need to match words from lines. For example: The blue bird is dancing. Yellow card is drawn The day is perfect rainy blue bird is eating The four lines are in a text file l2 . I want to match the blue bird, yellow card, day and every time a line is printed that matched word is printed before the line. y=regexp(l2,('^(?=.*blue bird)|(?=.*day)|(?=.*Yellow card)$')); Is this how it works? I can't get the result. sprintf('[%s]',y,l2); 回答1: MATLAB's regex engine doesn't use \b as word boundary

问题 I have two vectors, each of which includes a series of strings. For example, V1=c("pen", "document folder", "warn") V2=c("pens", "copy folder", "warning") I need to find which two are matched the best. I directly use levenshtein distance. But it is not good enough. In my case, pen and pens should mean the same. document folder and copy folder are probably the same thing. warn and warning are actually the same. I am trying to use the packages like tm. But I am not very sure which functions are

问题 Is there any way to find a position of a first character within a string in Bash under Mac OS X ? Something like: stringZ=abcABC123ABCabc # 6 echo `expr index "$stringZ" C12` # C position. as desribed in Advanced Bash-Scripting Guide Couple of gotchas: The official index function expr index $string $substring is not present in OS X (BSD) match Installing gnu match ( gmatch ) does not seem to be a portable solution in the realm of BSD systems Any ideas? 回答1: This is a horrible hack, and may

问题 Is there any way to find a position of a first character within a string in Bash under Mac OS X ? Something like: stringZ=abcABC123ABCabc # 6 echo `expr index "$stringZ" C12` # C position. as desribed in Advanced Bash-Scripting Guide Couple of gotchas: The official index function expr index $string $substring is not present in OS X (BSD) match Installing gnu match ( gmatch ) does not seem to be a portable solution in the realm of BSD systems Any ideas? 回答1: This is a horrible hack, and may

问题 Scala beginner here, I'm trying to find all the tweets text that contain at least one keyword in the list of keywords given. Where a tweet: case class Tweet(user: String, text: String, retweets: Int) With an example Tweet("user1", "apple apple", 3) Given that wordInTweet should return true if at least one keyword in the list keywords can be found in the tweet's text. I tried implementing it like the following: def wordInTweet(tweet: Tweet, keywords: List[String]): Boolean = { keywords.exists

问题 In the example in the crate documentation of serde_json (parse JSON into a Rust struct), error handling is omitted: use serde::{Deserialize, Serialize}; use serde_json::Result; #[derive(Serialize, Deserialize)] struct Person { name: String, age: u8, phones: Vec<String>, } fn typed_example() -> Result<()> { // Some JSON input data as a &str. Maybe this comes from the user. let data = r#" { "name": "John Doe", "age": 43, "phones": [ "+44 1234567", "+44 2345678" ] }"#; // Parse the string of

问题 I haven't been able to perform a complex query with an Any() inside an Any(), using MongoDB C# Driver.. I have this C# models (equivalent to the mongo database models): [BsonCollection("alert_evaluations")] public class AlertEvaluation : Document { public ICollection<EvaluationResult> EvaluationResults { get; set; } public string EvaluationStatus { get; set; } public DateTime EvaluatedAt { get; set; } } public class EvaluationResult { public ICollection<EvaluatedLabel> EvaluatedLabels { get;

问题 I haven't been able to perform a complex query with an Any() inside an Any(), using MongoDB C# Driver.. I have this C# models (equivalent to the mongo database models): [BsonCollection("alert_evaluations")] public class AlertEvaluation : Document { public ICollection<EvaluationResult> EvaluationResults { get; set; } public string EvaluationStatus { get; set; } public DateTime EvaluatedAt { get; set; } } public class EvaluationResult { public ICollection<EvaluatedLabel> EvaluatedLabels { get;

问题 I haven't been able to perform a complex query with an Any() inside an Any(), using MongoDB C# Driver.. I have this C# models (equivalent to the mongo database models): [BsonCollection("alert_evaluations")] public class AlertEvaluation : Document { public ICollection<EvaluationResult> EvaluationResults { get; set; } public string EvaluationStatus { get; set; } public DateTime EvaluatedAt { get; set; } } public class EvaluationResult { public ICollection<EvaluatedLabel> EvaluatedLabels { get;

问题 I have mydf1 <- data.frame(ID = c(1,2,3,4,5), color = c("red", NA, NA, NA, "green"), name = c("tom", "dick", "harry", "steve", "mike")) mydf2 <- data.frame(ID = c(1,2,99), color = c("red", "orange", "yellow"), name = c("tom", "dick", "Aaron")) I would like to update mydf1$color with the corresponding color from mydf2 for any rows that match on both ID and name. The desired output would be to update the color in row 2 to orange and leave the rest as is: ID color name 1 1 red tom 2 2 orange