delimiter

问题 Hello I have a cell array of char (separated by underscore) that I would like to convert to double. I do it in a for loop, but since the dimensions are very big, it takes a lot of time. I would like to use cellfun , but I don't know how to pass the delimiter. Can you help me? listofwords = {'02_04_04_52';'02_24_34_02'}; for i = 1 : size(listofwords,1) listofwords_double(i,:) = str2double(strsplit(listofwords{i},'_'))./1000; end listofwords_double2= cellfun(@strsplit , listofwords); Benchmark

问题 I have been learning PHP for some time now and I wanted one clarification. I have seen the preg_match function called with different delimiting symbols like: preg_match('/.../') and preg_match('#...#') Today I also saw % being used. My question is two part: What all characters can be used? And is there a standard ? 回答1: Any non-alphanumeric non-whitespace and non-backslash ASCII character can be used as delimiter. Also if you using the opening punctuation symbols as opening delimiter: ( { [ <

问题 Here is my table structure: id PaymentCond 1 ZBE1, AP1, LST2, CC1 2 VB3, CC1, ZBE1 I need to split the column PaymentCond , and would love to do that with a simple sql query since I have no clue how to use functions and would love to keep it all simple. Here is what I already found: SELECT id, Substring(PaymentConditions, 1, Charindex(',', PaymentConditions)-1) as COND_1, Substring(PaymentConditions, Charindex(',', PaymentConditions)+1, LEN(ANGEBOT.STDTXT)) as COND_2 from Payment WHERE id =

问题 I have many .csv files that are to be loaded into pandas data-frames, there are at a minimum two delimiters comma and semi colon, and I am unsure of the rest of the delimiters. I understand that the delimeter can be set using dataRaw = pd.read_csv(name,sep=",") and dataRaw = pd.read_csv(name,sep=";") unfortunately if I was to not specify a delimiter the default is comma which results in a single column data frame for other delimiters. thus is there a dynamic way to allocate a delimiter so

问题 When using writetable() to write a Data Frame to a file, I would like to be able to have the delimiter be a space then a comma (i.e. " ," as the delimiter). I know writetable() only has the option to have a single char as the separator argument. Is there a possible workaround to be able to have a string as the delimiter? Or, is it possible to simply add a space after every single data point in the data frame and then output it as normal to a .csv file, therefore essentially having the " ,"

问题 I have this question, Write a function to determine if a text has balanced delimiters. The pairs of valid delimiters are (), [], {}, and <>. They may be nested. In addition, determine that text delimiters ' and " are properly matched. I am coding in java by the way.. For each test line, output is "1" if it has balanced delimiters, "0" otherwise. An example below, 4 --- 0 {123} --- 1 {qweqwe{sdad} --- 0 The problem, is, how can I write in java code, to check whether the pair of valid

问题 This is really self explanatory. I'm working in a bash shell and I'm really new to shell scripting. I've found a lot of information about using tr and sed but all the examples I have found so far are removing delimiters and new lines. I really want to do the opposite of that. I want to be able to separate based on a blank space. I have a string like "abcd efgh" and I need it to be "abcd" "efgh" (all without quotes, just to show groupings). I'm sure this is much simpler than I'm making it, but

问题 I have the following shell command: awk -F'\[|\]' '{print $2}' What is this command doing? Split into fields using as delimiter [sometext] ? E.g.: $ echo "this [line] passed to awk" | awk -F'\[|\]' '{print $2}' line Editor's note: Only Mawk, as used on Ubuntu by default, produces the output above. 回答1: The apparent intent is to treat literal [ and ] as field-separator characters, i.e., to split each input record into fields by each occurrence of [ and/or ] , which, with the sample line,

问题 After researching Google and SO, there seems to be conflicting opinions on this. We have run-in to a problem with Google Chrome substituting | separator as %7C , whereas Firefox and Safari do not. Here's an example: http://www.example.com/page1|sub-page2|sub-page-3 Are there any strict rules to follow when choosing a separator character for semantic URLs and are there any strong arguments against (or workarounds when) using | ? 回答1: | is not a valid character in a URL. Modern browsers will

问题 I am about to write a message protocol going over a TCP stream. The receiver needs to know where the message boundaries are. I can either send 1) fixed length messages, 2) size fields so the receiver knows how big the message is, or 3) a unique message terminator (I guess this can't be used anywhere else in the message). I won't use #1 for efficiency reasons. I like #2 but is it possible for the stream to get out of sync? I don't like idea #3 because it means receiver can't know the size of