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Objective-C: Reading a file line by line

What is the appropriate way of dealing with large text files in Objective-C? Let's say I need to read each line separately and want to treat each line as an NSString. What is the most efficient way of doing this? ...
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How to directly initialize a HashMap (in a literal way)?

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How to check if a string is a valid hex color representation?

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How to round up to the nearest 10 (or 100 or X)?

I am writing a function to plot data. I would like to specify a nice round number for the y-axis max that is greater than the max of the dataset. ...
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Remove rows with duplicate indices (Pandas DataFrame and TimeSeries)

I'm reading some automated weather data from the web. The observations occur every 5 minutes and are compiled into monthly files for each weather station. Once I'm done parsing a file, the DataFrame looks something like this: ...
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How do I redirect output to a variable in shell? [duplicate]

I have a script like that 8 Answers 8 ...
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How do I read the source code of shell commands?

I would like to read the actual source code which the linux commands are written with. I've gained some experience using them and now I think it's time to interact with my machine at a deeper level. ...
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Create a GUID in Java

What are some of the best ways to create a GUID in Java? 6 Answers 6 ...
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How to select the rows with maximum values in each group with dplyr? [duplicate]

I would like to select a row with maximum value in each group with dplyr. 6 Answers 6 ...
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Regular expression to check if password is “8 characters including 1 uppercase letter, 1 special cha

I want a regular expression to check that 13 Answers 13 ...