Regular Expressions 101

Pro

1st Alternative^iOS[2][1][0-3]$

^start of line

iOSthe literal text iOS (case sensitive)

Character Class[2]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[1]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-3]

0-3one character from 0 (48₁₀) to 3 (51₁₀)

$end of line

2nd Alternative^iOS[2][0]\d$

^start of line

iOSthe literal text iOS (case sensitive)

Character Class[2]

2the literal 2 (50₁₀ / 62₈ / 32₁₆)

Character Class[0]

0the literal 0 (48₁₀ / 60₈ / 30₁₆)

\da digit

$end of line

3rd Alternative^iOS[1][0-9][0-9]$

^start of line

iOSthe literal text iOS (case sensitive)

Character Class[1]

1the literal 1 (49₁₀ / 61₈ / 31₁₆)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$end of line

4th Alternative^iOS[1-9][0-9]$

^start of line

iOSthe literal text iOS (case sensitive)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

Character Class[0-9]

0-9one character from 0 (48₁₀) to 9 (57₁₀)

$end of line

5th Alternative^iOS[1-9]$

^start of line

iOSthe literal text iOS (case sensitive)

Character Class[1-9]

1-9one character from 1 (49₁₀) to 9 (57₁₀)

$end of line

Global pattern flags

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

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

25 tokens

Regular Expression

^iOS[2][1][0-3]$|^iOS[2][0]\d$|^iOS[1][0-9][0-9]$|^iOS[1-9][0-9]$|^iOS[1-9]$

New

iOS0
iOS7
iOS8
iOS9
iOS10
iOS11
iOS12
iOS13
iOS14
iOS200
iOS201
iOS202
iOS203
iOS205
iOS214

Substitution

iOS0
iOS7
iOS8
iOS9
iOS10
iOS11
iOS12
iOS13
iOS14
iOS200
iOS201
iOS202
iOS203
iOS205
iOS214