In JavaScript, strings are immutable, which means the best you can do is to create a new string with the changed content and assign the variable to point to it. You’ll need to define the replaceAt() function yourself: String.prototype.replaceAt = function(index, replacement) { return this.substring(0, index) + replacement + this.substring(index + replacement.length); } And use … Read more
The easiest would be to use a regular expression with g flag to replace all instances: str.replace(/foo/g, “bar”) This will replace all occurrences of foo with bar in the string str. If you just have a string, you can convert it to a RegExp object like this: var pattern = “foobar”, re = new RegExp(pattern, … Read more
find /home/www \( -type d -name .git -prune \) -o -type f -print0 | xargs -0 sed -i ‘s/subdomainA\.example\.com/subdomainB.example.com/g’ -print0 tells find to print each of the results separated by a null character, rather than a new line. In the unlikely event that your directory has files with newlines in the names, this still lets … Read more
Use \r instead of \n. Substituting by \n inserts a null character into the text. To get a newline, use \r. When searching for a newline, you’d still use \n, however. This asymmetry is due to the fact that \n and \r do slightly different things: \n matches an end of line (newline), whereas \r … Read more
RENAME SPECIFIC COLUMNS Use the df.rename() function and refer the columns to be renamed. Not all the columns have to be renamed: df = df.rename(columns={‘oldName1’: ‘newName1’, ‘oldName2’: ‘newName2’}) # Or rename the existing DataFrame (rather than creating a copy) df.rename(columns={‘oldName1’: ‘newName1’, ‘oldName2’: ‘newName2’}, inplace=True) Minimal Code Example df = pd.DataFrame(‘x’, index=range(3), columns=list(‘abcde’)) df a b … Read more