Regular expression to match "="

3 visualizaciones (últimos 30 días)
Bruno Luong
Bruno Luong el 21 de Sept. de 2019
Comentada: Bruno Luong el 21 de Sept. de 2019
In try to find a simple pattern p to match a single '=' but ignore '==' in a string
So I want
regexp('a = b', p)
to return 3
regexp('a == b', p)
to return [].
I try several things and they are all fail on '=='
>> regexp('a == b','=(?!=)')
ans =
4
>> regexp('a == b','={1}')
ans =
3 4
>> regexp('a == b','(?!==)=')
ans =
4
Any suggestion for simple pattern?

Respuesta aceptada

Walter Roberson
Walter Roberson el 21 de Sept. de 2019
regexp('a == b = d','(?<!=)=(?!=)')
This looks for = that are not preceded by = and not followed by =

Más respuestas (0)

Categorías

Más información sobre Logical en Help Center y File Exchange.

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by