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What should I use Android AccountManager for?
I've seen AccountManager in the Android SDK and that it is used for storing account information. Thus, I cannot find any general discussion of what it is intended for. Does anyone know of any helpful discussions of what the intention behind AccountManager is and what it buys you? Any opinions of wha...
How to convert DOS/Windows newline (CRLF) to Unix newline (LF) in a Bash script?
...he name UNIX-file; if you try to use the same name twice, you will end up with no data in the file.
You can't do it the other way round (with standard 'tr').
If you know how to enter carriage return into a script (control-V, control-M to enter control-M), then:
sed 's/^M$//' # DOS to Unix
sed...
What is the point of Lookup?
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It's a cross between an IGrouping and a dictionary. It lets you group items together by a key, but then access them via that key in an efficient manner (rather than just iterating over them all, which is what GroupBy lets you...
Get hours difference between two dates in Moment Js
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Shouldn't it be startTime.diff(end, 'hours', true);? The duration.asHours(); would return 1 if it was 25 hours ago.
– Daniel F
Nov 5 '15 at 23:04
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Reading a UTF8 CSV file with Python
I am trying to read a CSV file with accented characters with Python (only French and/or Spanish characters). Based on the Python 2.5 documentation for the csvreader ( http://docs.python.org/library/csv.html ), I came up with the following code to read the CSV file since the csvreader supports only A...
Why use symbols as hash keys in Ruby?
...ically "immutable strings" .. that means that they can not be changed, and it implies that the same symbol when referenced many times throughout your source code, is always stored as the same entity, e.g. has the same object id.
Strings on the other hand are mutable, they can be changed anytime. T...
How do you find the row count for all your tables in Postgres
... for all my tables in Postgres. I know I can do this one table at a time with:
15 Answers
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Can't find how to use HttpContent
...r stringContent = new StringContent(jObject.ToString());
var response = await httpClient.PostAsync("http://www.sample.com/write", stringContent);
Or,
var stringContent = new StringContent(JsonConvert.SerializeObject(model), Encoding.UTF8, "application/json");
var response = await httpClient.PostA...
Is there a way to detach matplotlib plots so that the computation can continue?
After these instructions in the Python interpreter one gets a window with a plot:
19 Answers
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In a django model custom save() method, how should you identify a new object?
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Updated: With the clarification that self._state is not a private instance variable, but named that way to avoid conflicts, checking self._state.adding is now the preferable way to check.
self.pk is None:
returns True within a new...