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How to create a file in Android?
How to create a file, write data into it and read data from it on Android? If possible provide a code snippet.
4 Answers
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Getting number of elements in an iterator in Python
... you a better way to accomplish your actual goal.
Edit: Using list() will read the whole iterable into memory at once, which may be undesirable. Another way is to do
sum(1 for _ in iterable)
as another person posted. That will avoid keeping it in memory.
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csv.Error: iterator should return strings, not bytes
... Just want to add to this that if you get encoding errors when you try reading/writing from/to a CSV file, adding a particular encoding can help. I just fixed this bug on mine by adding "encoding = 'utf-8'".
– covfefe
Oct 16 '15 at 22:06
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open() in Python does not create a file if it doesn't exist
What is the best way to open a file as read/write if it exists, or if it does not, then create it and open it as read/write? From what I read, file = open('myfile.dat', 'rw') should do this, right?
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What is the “volatile” keyword used for?
I read some articles about the volatile keyword but I could not figure out its correct usage. Could you please tell me what it should be used for in C# and in Java?
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Read and parse a Json File in C#
...est part of two days "faffing" about with code samples and etc., trying to read a very large JSON file into an array in c# so I can later split it up into a 2d array for processing.
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Python CSV error: line contains NULL byte
...are unaware what od is or does). Do this:
print repr(open('my.csv', 'rb').read(200)) # dump 1st 200 bytes of file
and carefully copy/paste (don't retype) the result into an edit of your question (not into a comment).
Also note that if the file is really dodgy e.g. no \r or \n within reasonable d...
Ruby on Rails - Import Data from a CSV file
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require 'csv'
csv_text = File.read('...')
csv = CSV.parse(csv_text, :headers => true)
csv.each do |row|
Moulding.create!(row.to_hash)
end
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i...
How can I overwrite a getter method in an ActiveRecord model?
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The Rails Style Guide recommends using self[:attr] over read_attribute(:attr).
You can use it like this:
def name
name_trans || self[:name]
end
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How to read from standard input in the console?
I would like to read standard input from the command line, but my attempts have ended with the program exiting before I'm prompted for input. I'm looking for the equivalent of Console.ReadLine() in C#.
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