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- python - What is the difference between shallow copy, deepcopy and . . .
Deep copy is related to nested structures If you have list of lists, then deepcopy copies the nested lists also, so it is a recursive copy With just copy, you have a new outer list, but inner lists are references Assignment does not copy It simply sets the reference to the old data So you need copy to create a new list with the same contents
- How to copy a dictionary and only edit the copy - Stack Overflow
A shallow copy constructs a new compound object and then (to the extent possible) inserts references into it to the objects found in the original A deep copy constructs a new compound object and then, recursively, inserts copies into it of the objects found in the original
- How do I copy an object in Java? - Stack Overflow
Create a copy constructor: class DummyBean { private String dummy; public DummyBean(DummyBean another) { this dummy = another dummy; you can access } } Every object has also a clone method which can be used to copy the object, but don't use it It's way too easy to create a class and do improper clone method If you are going to do that, read at least what Joshua Bloch has to say about it
- How to override the copy deepcopy operations for a Python object?
The copy module does not use the copy_reg registration module In order for a class to define its own copy implementation, it can define special methods __copy__() and __deepcopy__() The former is called to implement the shallow copy operation; no additional arguments are passed
- linux - How can I copy the output of a command directly into my . . .
How can I pipe the output of a command into my clipboard and paste it back when using a terminal? For instance: cat file | clipboard
- What is the difference between Copy and Clone? - Stack Overflow
Clone is designed for arbitrary duplications: a Clone implementation for a type T can do arbitrarily complicated operations required to create a new T It is a normal trait (other than being in the prelude), and so requires being used like a normal trait, with method calls, etc The Copy trait represents values that can be safely duplicated via memcpy: things like reassignments and passing an
- How to reuse a set of power query steps in another Excel document?
Copy and Paste In PowerQuery right-click on the final query and select copy Open a new Excel workbook, open PowerQuery and paste the query into the queries pane All dependent queries and parameters will be copied as well Then you can adjust the query steps and save the new workbook
- Copy data from another Workbook through VBA - Stack Overflow
The best (and easiest) way to copy data from a workbook to another is to use the object model of Excel Option Explicit Sub test() Dim wb As Workbook, wb2 As Workbook Dim ws As Worksheet Dim vFile As Variant 'Set source workbook Set wb = ActiveWorkbook 'Open the target workbook vFile = Application GetOpenFilename("Excel-files,* xls", _ 1, "Select One File To Open", , False) 'if the user didn't
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