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Clone Object without reference javascript [duplicate]

I have a big object with much data. And i want to clone this in other variable. When i set some param of the instance B has the same result in the original object: ...
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ActiveRecord: List columns in table from console

I know that you can ask ActiveRecord to list tables in console using: 8 Answers 8 ...
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What is the purpose of the single underscore “_” variable in Python?

What is the meaning of _ after for in this code? 5 Answers 5 ...
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“f” after number

What does the f after the numbers indicate? Is this from C or Objective-C? Is there any difference in not adding this to a constant number? ...
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Why does “pip install” inside Python raise a SyntaxError?

I'm trying to use pip to install a package. I try to run pip install from the Python shell, but I get a SyntaxError . Why do I get this error? How do I use pip to install the package? ...
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What does the comma operator , do?

What does the , operator do in C? 8 Answers 8 ...
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What is the global interpreter lock (GIL) in CPython?

What is a global interpreter lock and why is it an issue? 8 Answers 8 ...
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To switch from vertical split to horizontal split fast in Vim

How can you switch your current windows from horizontal split to vertical split and vice versa in Vim? 8 Answers ...
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Adding new column to existing DataFrame in Python pandas

I have the following indexed DataFrame with named columns and rows not- continuous numbers: 24 Answers ...
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How do I find a stored procedure containing ?

I need to search a SQL server 2008 for stored procedures containing where maybe the name of a database field or variable name. ...