matching

I use grep very often and am familiar with it's ability to return matching lines (by default) and non-matching lines (using the -v parameter). However, I want to be able to grep a file once to separate matching and non-matching lines. If this is not possible, please let me know. I realize I could do this easily in perl or awk, but am curious if it is possible with grep. Thanks! If it does NOT have to be grep - this is a single pass split based on a pattern -- pattern found > file1 pattern not found > file2 awk '/pattern/ {print $0 > "file1"; next}{print $0 > "file2"}' inputfile I had the exact

The anyMatch operation will return true if it finds an element - the noneMatch operation will return false it if finds a matching element. The anyMatch operation will return false if it finds no matching element - the noneMatch operation will return true if finds no matching element. Therefore, instead of having both of these operations, could we not just do with one, or am I missing something? In essence, anyMatch returning false is a way of evaluating the truth of noneMatch's predicate. Same reason you have a != b , instead of only supporting ! (a == b) : Easy of use. Clarity of purpose. Yes

When Paren Match Highlighting (in the Options menu) is enabled, it nicely highlights matched parentheses. Is there something like this but for XML tags? For example, if I had: <para> lksjdflksdjfksdjf </para> it would highlight both tags if my point was anywhere inside one of the tags (even including the less-than and greater-than signs). Thanks for help! Luke Girvin Mike Spindel has written a minor mode, hl-tags-mode , which provides this feature. 来源： https://stackoverflow.com/questions/7784334/emacs-matching-tags-highlighting

I've been trying to extract URLs from a text file using re api. any link that starts with http:// , https:// and www. the file contains texts as well as html source code, html part is easy because i can extract them using BeautifulSoup, but normal text seems to be more challenging. I found this online which seems to be the best implementation of URL extraction however it fails on certain tags, specially it can't handle tags and includes them in the URL. any help is appreciated, because I'm not familiar with string matching at all myself here is the signature sp1=re.findall("http[s]?://(?:[a-zA

I have a requirement to provide a suggested match between data in two database tables. The basic requirement is; - A "match" should be suggested for the highest number of matched words (irrespective of order) between the two columns in question. For example, given the data; Table A Table B 1,'What other text in here' 5,'Other text in here' 2,'What am I doing here' 6,'I am doing what here' 3,'I need to find another job' 7,'Purple unicorns' 4,'Other text in here' 8,'What are you doing in here' Ideally, my desired matches would look as follows; 1 -> 8 (3 words matched) 2 -> 6 (5 words matched) 3

I have two data frames, logger and df (times are numeric): logger <- data.frame( time = c(1280248354:1280248413), temp = runif(60,min=18,max=24.5) ) df <- data.frame( obs = c(1:10), time = runif(10,min=1280248354,max=1280248413), temp = NA ) I would like to search logger$time for the closest match to each row in df$time, and assign the associated logger$temp to df$temp. So far, I have been successful using the following loop: for (i in 1:length(df$time)){ closestto<-which.min(abs((logger$time) - (df$time[i]))) df$temp[i]<-logger$temp[closestto] } However, I now have large data frames (logger