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How do I partially update an object in MongoDB so the new object will overlay / merge with the exist

... If I understand the question correctly, you want to update a document with the contents of another document, but only the fields that are not already present, and completely ignore the fields that are already set (even if to another valu...
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GraphViz - How to connect subgraphs?

...t a dependency diagram. I need to be able to have nodes inside a container and to be able to make nodes and/or containers dependent on other nodes and/or containers. ...
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javascript: Clear all timeouts?

... It need not start at 1. The HTML5 spec says "Let handle be a user-agent-defined integer that is greater than zero that will identify the timeout to be set by this call." which leaves room for the handle to be any positive integer including non-consecutive and non-small integ...
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How to add an extra column to a NumPy array

... I think a more straightforward solution and faster to boot is to do the following: import numpy as np N = 10 a = np.random.rand(N,N) b = np.zeros((N,N+1)) b[:,:-1] = a And timings: In [23]: N = 10 In [24]: a = np.random.rand(N,N) In [25]: %timeit b = np.hstac...
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What are 'closures' in .NET?

... The general feature of closures is implemented in C# by anonymous methods and lambda expressions. Here's an example using an anonymous method: using System; class Test { static void Main() { Action action = CreateAction(); action(); action(); } static Act...
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Putty: Getting Server refused our key Error

...po in my key. Apparently when pasting to file the first letter was cut off and it started with sh-rsa instead of ssh-rsa. nrathathaus - your answer was very helpful, thanks a lot, this answer is credited to you :) I did like you said and set this in sshd_conf: LogLevel DEBUG3 By looking at the l...
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What's the need of array with zero elements?

...n the Linux kernel code I found the following thing which I can not understand. 5 Answers ...
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TypeError: 'NoneType' object is not iterable in Python

...al life other than making us insert few ugly if data is not None: kind of handling. – nehem Sep 1 '17 at 6:59 ...
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How to get current timestamp in milliseconds since 1970 just the way Java gets

...ime units in a type-safe way so the compiler can enforce unit conversions, and works with normal arithmetic operators (adding timeval structs is annoying). – Oz. Nov 10 '16 at 19:02 ...
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Perform commands over ssh with Python

I'm writing a script to automate some command line commands in Python. At the moment I'm doing calls thus: 13 Answers ...