Regular Expressions 101

1st Alternative^\s*(,\s*)*

^start of string

\s*any whitespace character, repeated any number of times

Group 1(,\s*)*

*repeats the group contents below any number of times:

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\s*any whitespace character, repeated any number of times

2nd Alternative,\s*(?=,|$)

,the literal , (44₁₀ / 54₈ / 2C₁₆)

\s*any whitespace character, repeated any number of times

Positive Lookahead(?=,|$)

1st Alternative,

,the literal , (44₁₀ / 54₈ / 2C₁₆)

2nd Alternative$

$end of string, or before its final line terminator

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

^\s*(,\s*)*|,\s*(?=,|$)

New

,,,, 'time_hour', 'loc', 'protocol_category', , 'mcc', 'imsi', 'service_dl_bytes', , ,,,,,,,,

,,,, 'time_hour', 'loc', 'protocol_category', , 'mcc', 'imsi', 'service_dl_bytes', , ,,,,,,,,