regex empty string match code example

how to write indexof in javascript code example ubuntu change file permissions code example how to make schema mongoose code example sql create new column query code example open csc file as dataframe code example literal string in java code example utf8 to unicode conversion in php code example index of max element in nd array code example manifest json vue app code example java collections list return first code example file permissions linux chmod code example how to make public for getting access s3 bucket code example