Finding the particular pattern from cell array

Question

Gopalakrishnan venkatesan 2017-8-4

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/351575-finding-the-particular-pattern-from-cell-array

编辑： Stephen23 2017-8-4

采纳的回答： Stephen23

I have a cell array,

A = {'file.m', 'file.log', 'file_dsaf_dsfaf.log', 'data.log'}

I need to extract the element starting with fi and ending with log

How can i extract it using the regular expression?

Thanks a lot

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Answer 1

Stephen23 2017-8-4

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/351575-finding-the-particular-pattern-from-cell-array#answer_276809

编辑：Stephen23 2017-8-4

在 MATLAB Online 中打开

>> A = {'file.m', 'file.log', 'file_dsaf_dsfaf.log', 'data.log'};
>> idx = cellfun('isempty',regexp(A,'^fi.*log$'));
>> B = A(~idx)
B =
    'file.log'
    'file_dsaf_dsfaf.log'

Note that if you are using dir to get the file data then it would be much simpler and more efficient to filter the filenames using dir and the wildcard operator *: