Try this: echo “$HEAD” | tr -s ” ” or maybe you want to save it in a variable: NEWHEAD=$(echo “$HEAD” | tr -s ” “) Update To remove leading and trailing whitespaces, do this: NEWHEAD=$(echo “$HEAD” | tr -s ” “) NEWHEAD=${NEWHEAD%% } NEWHEAD=${NEWHEAD## }
The fastest way? Iterate over the string and build a second copy in a StringBuilder character by character, only copying one space for each group of spaces. The easier to type Replace variants will create a bucket load of extra strings (or waste time building the regex DFA). Edit with comparison results: Using http://ideone.com/NV6EzU, with … Read more
I found the answer here. Adding the following to my .vimrc file did the trick: autocmd BufWritePre *.py :%s/\s\+$//e The e flag at the end means that the command doesn’t issue an error message if the search pattern fails. See :h :s_flags for more.
You may want to override the margin-bottom: 20px from navbar : .navbar { margin-bottom: 0; } Something like that : http://jsfiddle.net/q4M2G/ (the !important is here just to override the style of the CDN version of bootstrap I’m using in the jsfiddle but you should not need to use it if your style correctly overrides bootstrap … Read more
Add vertical-align: top to textarea. The reason for the gap is that textarea is an inline (or inline-block) element, and the gap is the space reserved for descenders in text. I don’t know exactly why the gap is different between different browsers.
See the String method trim() – https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/String/Trim var myString = ‘ bunch of <br> string data with<p>trailing</p> and leading space ‘; myString = myString.trim(); // or myString = String.trim(myString); Edit As noted in other comments, it is possible to use the regex approach. The trim method is effectively just an alias for a regex: if(!String.prototype.trim) … Read more
There are many different invisible characters. Many of them have the property WSpace=Y (“whitespace”) in Unicode. But some special characters are not considered “whitespace” and still have no visible representation. The excellent Wikipedia articles about space (punctuation) and whitespace characters should give you an idea. <rant>Unicode sucks in this regard: introducing lots of exotic characters … Read more
UPDATE: A quick benchmark showed that Matt’s own adaption, based on Max’ & mine, performs best. @implementation NSString (TrimmingAdditions) – (NSString *)stringByTrimmingLeadingCharactersInSet:(NSCharacterSet *)characterSet { NSUInteger location = 0; NSUInteger length = [self length]; unichar charBuffer[length]; [self getCharacters:charBuffer]; for (location; location < length; location++) { if (![characterSet characterIsMember:charBuffer[location]]) { break; } } return [self substringWithRange:NSMakeRange(location, length … Read more
If you are more interested in the bits that are not whitespace, you can match the non-whitespace instead of splitting on whitespace. ” The quick brown fox jumps over the lazy dog. “.match(/\S+/g); Note that the following returns null: ” “.match(/\S+/g) So the best pattern to learn is: str.match(/\S+/g) || []
If you are trying to get a Root Cause issue using blame, don’t forget use the -w flag to ignore all the white-spaces or indentation changes. So you’ll get the last real change to the code, instead just an indentation, or removing trailing spaces. git blame -w app/to/file.rb or you can just use, git slap … Read more