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Bookmark or Share- What are the options to clone or copy a list in Python? - Stack Overflow@loved.by.Jesus: Yeah, they added optimizations for Python level method calls in 3.7 that were extended to C extension method calls in 3.8 by PEP 590 that remove the overhead of creating a bound method each time you call a method, so the cost to call alist.copy() is now a dict lookup on the list type, then a relatively cheap no-arg function call that ultimately invokes the same thing as slicing.
- How do I copy an object in Java? - Stack OverflowDeep copying: A deep copy occurs when an object is copied along with the objects to which it refers. Below image shows obj1 after a deep copy has been performed on it. Not only has obj1 been copied, but the objects contained within it have been copied as well. We can use Java Object Serialization to make a deep copy.
- What is the difference between the 'COPY' and 'ADD' commands in a ...COPY copies a file/directory from your host to your image. ADD copies a file/directory from your host to your image, but can also fetch remote URLs, extract TAR files, etc... Use COPY for simply copying files and/or directories into the build context. Use ADD for downloading remote resources, extracting TAR files, etc..
- Batch file to copy files from one folder to another folder/h - copy system and hidden files. /k - copy read-only attributes along with files. otherwise, all files become read-write. /x - if you care about permissions, you might want /o or /x. /y - don't prompt before overwriting existing files. /z - if you think the copy might fail and you want to restart it, use this. It places a marker on each file ...
- python - How to copy files - Stack Overflowimport shutil shutil.copyfile(src, dst) # 2nd option shutil.copy(src, dst) # dst can be a folder; use shutil.copy2() to preserve timestamp Copy the contents of the file named src to a file named dst. Both src and dst need to be the entire filename of the files, including path.
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