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Wait for all promises to resolve
So I have a situation where I have multiple promise chains of an unknown length. I want some action to run when all the CHAINS have been processed. Is that even possible? Here is an example:
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HTML input - name vs. id [duplicate]
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I know it sends the data to the webserver and there you can store it in the database. (was just providing some examples of what you could do) Excuse me for my inattentiveness on that matter, I have edited my answer :)
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Use of 'const' for function parameters
...mation. You provide the parameter by value so the caller does not need to know anything on what you do (internally) with it. So write class Foo { int multiply(int a, int b) const; } in your header. In your implementation you do care that you can promise not to alter a and b so int Foo::multiply(cons...
Should I return a Collection or a Stream?
...t not process the whole result.) This is a very common case.
Even if you know that the user will iterate it multiple times or otherwise keep it around, you still may want to return a Stream instead, for the simple fact that whatever Collection you choose to put it in (e.g., ArrayList) may not be th...
what does the __file__ variable mean/do?
...e file otherwise.
Module __file__ attributes (and related values) should now always contain absolute paths by default, with the sole exception of __main__.__file__ when a script has been executed directly using a relative path. (Contributed by Brett Cannon in issue 18416.)
Example:
Calling module...
Why is \r a newline for Vim?
...\n to mean \n, so you use \r.
So you can't use \r to mean \r, but I don't know who would want to add that char on purpose.
—☈
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Add missing dates to pandas dataframe
...e,inplace=True)
df.index = pd.DatetimeIndex(df.index)
d = datetime.now().date()
d2 = d - timedelta(days = days_back)
idx = pd.date_range(d2, d, freq = "D")
df = df.reindex(idx,fill_value=fill_value)
df[date_col_name] = pd.DatetimeIndex(df.index)
return df
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What does the slash mean in help() output?
...s are mapped to parameters based solely on their position.
The syntax is now part of the Python language specification, as of version 3.8, see PEP 570 – Python Positional-Only Parameters. Before PEP 570, the syntax was already reserved for possible future inclusion in Python, see PEP 457 - Synta...
How do I get the current GPS location programmatically in Android?
...n while you move, but if you want just one time, you need to call "getLastKnownLocation()"
– swiftBoy
May 6 '14 at 4:35
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Difference between '..' (double-dot) and '…' (triple-dot) in range generation?
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The API docs now describe this behaviour:
Ranges constructed using .. run from the beginning to the end inclusively. Those created using ... exclude the end value.
-- http://ruby-doc.org/core-2.1.3/Range.html
In other words:
2.1.3 :001 ...