trim

问题 What is the best way to remove all spaces from a string in SQL Server 2008? LTRIM(RTRIM(\' a b \')) would remove all spaces at the right and left of the string, but I also need to remove the space in the middle. 回答1: Simply replace it; SELECT REPLACE(fld_or_variable, ' ', '') Edit: Just to clarify; its a global replace, there is no need to trim() or worry about multiple spaces for either char or varchar : create table #t ( c char(8), v varchar(8)) insert #t (c, v) values ('a a' , 'a a' ), ('a

问题 I need to remove spaces from the end of a string. How can I do that? Example: if string is \"Hello \" it must become \"Hello\" 回答1: Taken from this answer here: https://stackoverflow.com/a/5691567/251012 - (NSString *)stringByTrimmingTrailingCharactersInSet:(NSCharacterSet *)characterSet { NSRange rangeOfLastWantedCharacter = [self rangeOfCharacterFromSet:[characterSet invertedSet] options:NSBackwardsSearch]; if (rangeOfLastWantedCharacter.location == NSNotFound) { return @""; } return [self

问题 How can I trim characters in Java? e.g. String j = “\\joe\\jill\\”.Trim(new char[] {“\\”}); j should be \"joe\\jill\" String j = “jack\\joe\\jill\\”.Trim(\"jack\"); j should be \"\\joe\\jill\\\" etc 回答1: Apache Commons has a great StringUtils class (org.apache.commons.lang.StringUtils). In StringUtils there is a strip(String, String) method that will do what you want. I highly recommend using Apache Commons anyway, especially the Collections and Lang libraries. 回答2: This does what you want:

问题 Is there a Python function that will trim whitespace (spaces and tabs) from a string? Example: \\t example string\\t → example string 回答1: Whitespace on both sides: s = " \t a string example\t " s = s.strip() Whitespace on the right side: s = s.rstrip() Whitespace on the left side: s = s.lstrip() As thedz points out, you can provide an argument to strip arbitrary characters to any of these functions like this: s = s.strip(' \t\n\r') This will strip any space, \t , \n , or \r characters from

问题 How can I remove all white space from the beginning and end of a string? Like so: \"hello\" returns \"hello\" \"hello \" returns \"hello\" \" hello \" returns \"hello\" \" hello world \" returns \"hello world\" 回答1: String.Trim() returns a string which equals the input string with all white-spaces trimmed from start and end: " A String ".Trim() -> "A String" String.TrimStart() returns a string with white-spaces trimmed from the start: " A String ".TrimStart() -> "A String " String.TrimEnd()

问题 Does swift have a trim method on String? For example: let result = \" abc \".trim() // result == \"abc\" 回答1: Here's how you remove all the whitespace from the beginning and end of a String . (Example tested with Swift 2.0 .) let myString = " \t\t Let's trim all the whitespace \n \t \n " let trimmedString = myString.stringByTrimmingCharactersInSet( NSCharacterSet.whitespaceAndNewlineCharacterSet() ) // Returns "Let's trim all the whitespace" (Example tested with Swift 3+ .) let myString = "

问题 I can loop through all of the rows in a php script and do UPDATE mytable SET title = \"\'.trim($row[\'title\']).\'\" where id = \"\'.$row[\'id\'].\'\"; and trim can remove \\n But I was just wondering if something same could be done in one query? update mytable SET title = TRIM(title, \'\\n\') where 1=1 will it work? I can then just execute this query without requiring to loop through! thanks (PS: I could test it but table is quite large and dont want to mess with data, so just thought if you

问题 How do I, from an output, only select the first 10 words? 回答1: implode(' ', array_slice(explode(' ', $sentence), 0, 10)); To add support for other word breaks like commas and dashes, preg_match gives a quick way and doesn't require splitting the string: function get_words($sentence, $count = 10) { preg_match("/(?:\w+(?:\W+|$)){0,$count}/", $sentence, $matches); return $matches[0]; } As Pebbl mentions, PHP doesn't handle UTF-8 or Unicode all that well, so if that is a concern then you can

问题 How do I remove leading and trailing whitespace from a string in Python? For example: \" Hello \" --> \"Hello\" \" Hello\" --> \"Hello\" \"Hello \" --> \"Hello\" \"Bob has a cat\" --> \"Bob has a cat\" 回答1: Just one space, or all consecutive spaces? If the second, then strings already have a .strip() method: >>> ' Hello '.strip() 'Hello' >>> ' Hello'.strip() 'Hello' >>> 'Bob has a cat'.strip() 'Bob has a cat' >>> ' Hello '.strip() # ALL consecutive spaces at both ends removed 'Hello' If you

问题 I have a string, 12345.00 , and I would like it to return 12345.0 . I have looked at trim , but it looks like it is only trimming whitespace and slice which I don\'t see how this would work. Any suggestions? 回答1: You can use the substring function: let str = "12345.00"; str = str.substring(0, str.length - 1); console.log(str); This is the accepted answer, but as per the conversations below, the slice syntax is much clearer: let str = "12345.00"; str = str.slice(0, -1); console.log(str); 回答2: