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How to create a file in memory for user to download, but not through server?

.... If you have a text or CSV file, start the string with '\ufeff', the Byte Order Mark for UTF-16BE, and text editors will be able to read non-ASCII characters correctly. – larspars Nov 19 '14 at 9:06 ...
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What is the single most influential book every programmer should read? [closed]

... For Computer Scientists http://ecx.images-amazon.com/images/I/51HCJ5R42KL._SL500_BO2,204,203,200_AA219_PIsitb-sticker-dp-arrow,TopRight,-24,-23_SH20_OU02_.jpg Discrete Mathematics For Computer Scientists by J.K. Truss. While this doesn't teach you programming, it teaches you fundamental mathemati...
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Adding information to an exception?

....message + ' happens at %s' % arg1), sys.exc_info()[2] bar('arg1') Traceback (most recent call last): File "test.py", line 16, in <module> bar('arg1') File "test.py", line 11, in bar foo() File "test.py", line 5, in foo raise IOError('Stuff...
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Why does “return list.sort()” return None, not the list?

...e object named -- think of it as an action that the object is taking to re-order itself. The sort function is an operation over the data represented by an object and returns a new object with the same contents in a sorted order. Given a list of integers named l the list itself will be reordered if ...
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UIRefreshControl without UITableViewController

...wController, just add the refresh control beneath the table view like so: [_tableView insertSubview:_refreshControl atIndex:0];. Tested with both iOS 7 and 8 ;) – ptitvinou Oct 24 '14 at 21:32 ...
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Test for existence of nested JavaScript object key

... Update Looks like lodash has added _.get for all your nested property getting needs. _.get(countries, 'greece.sparta.playwright') https://lodash.com/docs#get Previous answer lodash users may enjoy lodash.contrib which has a couple methods that mitigate ...
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Are the days of passing const std::string & as a parameter over?

... @ildjarn: In order analysis, if the worst case of something is bound by a constant, then it's still constant time. Is there not a longest small string? Doesn't that string take some constant amount of time to copy? Don't all smaller st...
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What are the differences between json and simplejson Python modules?

...plejson from timeit import repeat NUMBER = 100000 REPEAT = 10 def compare_json_and_simplejson(data): """Compare json and simplejson - dumps and loads""" compare_json_and_simplejson.data = data compare_json_and_simplejson.dump = json.dumps(data) assert json.dumps(data) == simplejson...
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What's Mongoose error Cast to ObjectId failed for value XXX at path “_id”?

...ng a request to /customers/41224d776a326fb40f000001 and a document with _id 41224d776a326fb40f000001 does not exist, doc is null and I'm returning a 404 : ...
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Output to the same line overwriting previous output?

... Here's code for Python 3.x: print(os.path.getsize(file_name)/1024+'KB / '+size+' KB downloaded!', end='\r') The end= keyword is what does the work here -- by default, print() ends in a newline (\n) character, but this can be replaced with a different string. In this case, endi...