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Detect the specific iPhone/iPod touch model [duplicate]
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– rckoenes
Dec 21 '15 at 11:01
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NOTE As of iOS7, you can no longer retrieve device MAC addresses. A fixed value will be ret...
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Dan SimonDan Simon
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answered Jun 18 '11 at 20:44
user113716user113716
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How to check if a model has a certain column/attribute?
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Andy StewartAndy Stewart
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Efficiently checking if arbitrary object is NaN in Python / numpy / pandas?
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MariusMarius
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answered Nov 19 '11 at 14:43
Andrew ThompsonAndrew Thompson
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To find whether a column exists in data frame or not
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To get the grepl a bit more precise, you could use grepl("^d$",names(dat)), to ensure that a column with name dd does not return TRUE.
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edited Mar 8 '11 at 16:36
answered Apr 3 '09 at 13:04
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GitHub: make fork an “own project”
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larsks
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