Ben’s solution is acceptable, but str_replace() is by far faster than preg_replace() $buffer = str_replace(array(“\r”, “\n”), ”, $buffer); Using less CPU power, reduces the world carbon dioxide emissions.
Not the greatest, but this should work: sed -i ‘Ns/.*/replacement-line/’ file.txt where N should be replaced by your target line number. This replaces the line in the original file. To save the changed text in a different file, drop the -i option: sed ‘Ns/.*/replacement-line/’ file.txt > new_file.txt
Use the vectorised str method replace: df[‘range’] = df[‘range’].str.replace(‘,’,’-‘) df range 0 (2-30) 1 (50-290) EDIT: so if we look at what you tried and why it didn’t work: df[‘range’].replace(‘,’,’-‘,inplace=True) from the docs we see this description: str or regex: str: string exactly matching to_replace will be replaced with value So because the str values … Read more
string s = “ABCDEFGH”; s= s.Remove(3, 2).Insert(3, “ZX”);
This is the idiom I’ve always used to get a modified copy of a string without changing the original: (my $newstring = $oldstring) =~ s/foo/bar/g; In perl 5.14.0 or later, you can use the new /r non-destructive substitution modifier: my $newstring = $oldstring =~ s/foo/bar/gr; NOTE: The above solutions work without g too. They also … Read more
Make sure Use: Regular expressions is selected in the Find and Replace dialog: Note that for Visual Studio 2010, this doesn’t work in the Visual Studio Productivity Power Tools’ Quick Find extension (as of the July 2011 update); instead, you’ll need to use the full Find and Replace dialog (use Ctrl+Shift+H, or Edit –> Find … Read more
You need to use a regular expression, so that you can specify the global (g) flag: var s=”some+multi+word+string”.replace(/\+/g, ‘ ‘); (I removed the $() around the string, as replace is not a jQuery method, so that won’t work at all.)
Split on your separator at most once, and take the first piece: sep = ‘…’ stripped = text.split(sep, 1)[0] You didn’t say what should happen if the separator isn’t present. Both this and Alex’s solution will return the entire string in that case.
If you’re using python2 and your inputs are strings (not unicodes), the absolutely best method is str.translate: >>> chars_to_remove = [‘.’, ‘!’, ‘?’] >>> subj = ‘A.B!C?’ >>> subj.translate(None, ”.join(chars_to_remove)) ‘ABC’ Otherwise, there are following options to consider: A. Iterate the subject char by char, omit unwanted characters and join the resulting list: >>> sc … Read more
A good idea could be to encapsulate everything inside groups, no matter if need to identify them or not. That way you can use them in your replacement string. For example: var pattern = @”(-)(\d+)(-)”; var replaced = Regex.Replace(text, pattern, “$1AA$3”); or using a MatchEvaluator: var replaced = Regex.Replace(text, pattern, m => m.Groups[1].Value + “AA” … Read more