Questions tagged [mutated]

77 questions
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1 answer

Re-structuring an odd data structure, adding repeat values

I have been given an oddly structured dataset that I need to prepare for visualisation in GIS. The data is from historic newspapers from different locations in China, published between 1921 and 1937. The excel table is structured as follows: There…
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1 answer

Collection <__NSCFString:> was mutated while being enumerated crash

For some reason, I am getting a crash (noted below) saying "Collection <__NSCFString: 0x155cefd0> was mutated while being enumerated", but only on an actual device. It works on the Xcode test device. I'm not entirely sure what that means, so how do…
user3642059
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