to me,my idea isn't changed.

it's not 如一, it's 始终如一 = unchanged 嘛 yes, it's same as 吗 here the sentence meaning = as for me, the attitude is unchanged

consistency始终如一， 至于我嘛 - as for me

至于我(zhi4 yu2 wo3)=as for me. 嘛(ma) is an auxiliary word in Chinese, it doesn’t be used very often, especially by men in my opinion. When you say 至于我嘛~ ,the end sound will be a litter bit longer. 吗（ma1）is an auxiliary word too, but we always put 吗 in the behind of a question. Examples: 你吃饭了吗？ Have your lunch yet? ；昨晚睡得好吗？Did you sleep well last night? 如一(ru2 yi1) means “all the same ,from the beginning to the end; from the inside aspect to the outside”= 一直（yi4 zhi2）or = 一致（yi2 zhi4） Examples: 表里如一（biao3 li3 ru2 yi1）means sb’s looking outside is the same as his/her character inside. 他每天都给她送花，十年如一日。He send flowers to her everyday, this last for 10 years.（keep sending flowers, never stop）

as for me, My atitude to sth has not changed. 表里如一.