string-split

Python: Remove numbers at the beginning of a string

由 牧云@^-^@ 提交于 2019-12-10 17:53:43
问题 I have some strings like this: string1 = "123.123.This is a string some other numbers" string2 = "1. This is a string some numbers" string3 = "12-3-12.This is a string 123" string4 = "123-12This is a string 1234" I need to remove these numbers from the beginning of the string. I tried strip[start: end] method but because of the irregular format of the string I cant use it? any suggestions? 回答1: You can remove all digits, dots, dashes and spaces from the start using str.lstrip(): string1

How to count occurences in comma separated column?

由 杀马特。学长 韩版系。学妹 提交于 2019-12-08 03:16:38
问题 Question table: id | tags -------------------------------------- 1 | css,javascript,html 2 | mysql,sql,html 3 | css,spring,php 4 | css,java,html I am trying to figure out how to return the number of times a string occurs in each of the tags 's. Result Table: tags | count -------------------------------------- css | 3 html | 3 javascript | 1 php | 1 回答1: You can use: SqlFiddleDemo SELECT sub.val AS tags, COUNT(*) AS `count` FROM ( SELECT SUBSTRING_INDEX(SUBSTRING_INDEX(t.tags, ',', n.n), ',',

Java split string on comma(,) except when between parenthesis () [duplicate]

由 空扰寡人 提交于 2019-12-07 05:30:11
问题 This question already has answers here : Regex to match only commas not in parentheses? (3 answers) Closed 4 years ago . I would like to split a string in java on a comma(,) but whenever the comma(,) is in between some parenthesis, it should not be split. e.g. The string : "life, would, (last , if ), all" Should yield: -life -would -(last , if ) -all When I use : String text = "life, would, (last , if ), all" text.split(","); I end up dividing the whole text even the (last , if ) I can see

When processing a csv String with an empty final field, myString.split( “,” ) returns incorrect number of array entries

由 我的梦境 提交于 2019-12-06 23:22:11
问题 I'm processing a certain line read from a .csv file using String.split(",") and finding that the final empty string after the last delimiter is not making it into the array created by the split function. Here are the variable values that are causing the error: String toSplit = "1,Some Value,31337,Another Value,"; String[] values = toSplit.split( "," ); The values array ends up having fewer than the expected count of array entries. The array created is: values[0] : '1' values[1] : 'Some Value'

Splitting string using boost spirit

由 柔情痞子 提交于 2019-12-06 13:41:54
问题 Is it a good idea? For a reason I thought it should be faster than boost's tokenizer or split. however most of the time I'm stuck in the boost::spirit::compile template <typename Iterator> struct ValueList : bsq::grammar<Iterator, std::vector<std::string>()> { ValueList(const std::string& sep, bool isCaseSensitive) : ValueList::base_type(query) { if(isCaseSensitive) { query = value >> *(sep >> value); value = *(bsq::char_ - sep); } else { auto separator = bsq::no_case[sep]; query = value >> *

How to split a text into two meaningful words in R

由 你离开我真会死。 提交于 2019-12-05 22:19:24
this is the text in my dataframe df which has a text column called 'problem_note_text' SSCIssue: Note Dispenser Failureperformed checks / dispensor failure / asked the stores to take the note dispensor out and set it back / still error message says front door is open / hence CE attn reqContact details - Olivia taber 01159063390 / 7am-11pm df$problem_note_text <- tolower(df$problem_note_text) df$problem_note_text <- tm::removeNumbers(df$problem_note_text) df$problem_note_text<- str_replace_all(df$problem_note_text, " ", "") # replace double spaces with single space df$problem_note_text = str

Java split string on comma(,) except when between parenthesis () [duplicate]

由 拈花ヽ惹草 提交于 2019-12-05 11:19:16
This question already has answers here : Regex to match only commas not in parentheses? (3 answers) Closed 4 years ago . I would like to split a string in java on a comma(,) but whenever the comma(,) is in between some parenthesis, it should not be split. e.g. The string : "life, would, (last , if ), all" Should yield: -life -would -(last , if ) -all When I use : String text = "life, would, (last , if ), all" text.split(","); I end up dividing the whole text even the (last , if ) I can see that split takes a regex but I can't seem to think of how to make it do the job. you could use this

When processing a csv String with an empty final field, myString.split( “,” ) returns incorrect number of array entries

由 江枫思渺然 提交于 2019-12-05 02:58:52
I'm processing a certain line read from a .csv file using String.split(",") and finding that the final empty string after the last delimiter is not making it into the array created by the split function. Here are the variable values that are causing the error: String toSplit = "1,Some Value,31337,Another Value,"; String[] values = toSplit.split( "," ); The values array ends up having fewer than the expected count of array entries. The array created is: values[0] : '1' values[1] : 'Some Value' values[2] : '31337' values[3] : 'Another Value' with a values[4] throwing an ArrayIndexOutOfBounds

How to split Tamil characters in a string in PHP

由 最后都变了- 提交于 2019-12-05 01:36:53
How do I split Tamil characters in a string? When I use preg_match_all('/./u', $str, $results) , I get the characters "த", "ம", "ி", "ழ" and "்". How do I get the combined characters "த", "மி" and "ழ்"? I think you should be able to use the grapheme_extract function to iterate over the combined characters (which are technically called "grapheme clusters"). Alternatively, if you prefer the regex approach, I think you can use this: preg_match_all('/\pL\pM*|./u', $str, $results) where \pL means a Unicode "letter", and \pM means a Unicode "mark". (Disclaimer: I have not tested either of these

split strings into many strings by newline?

由 倖福魔咒の 提交于 2019-12-04 21:40:29
问题 i have incoming data that needs to be split into multiple values...ie. 2345\n564532\n345634\n234 234543\n1324 2435\n The length is inconsistent when i receive it, the spacing is inconsistent when it is present, and i want to analyze the last 3 digits before each \n. how do i break off the string and turn it into a new string? like i said, this round, it may have 3 \n commands, next time, it may have 10, how do i create 3 new strings, analyze them, then destroy them before the next 10 come in?
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