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How to initialize a dict with keys from a list and empty value in Python?
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Be careful with initializing to something mutable: If you call, e.g., dict.fromkeys([1, 2, 3], []), all of the keys are mapped to the same list, and modifying one will modify them all.
– charleslparker
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Comparing two dataframes and getting the differences
..., df1 != df2, works only for dataframes with identical rows and columns. In fact, all dataframes axes are compared with _indexed_same method, and exception is raised if differences found, even in columns/indices order.
If I got you right, you want not to find changes, but symmetric difference. Fo...
ssh: The authenticity of host 'hostname' can't be established
When i ssh to a machine, sometime i get this error warning and it prompts to say "yes" or "no". This cause some trouble when running from scripts that automatically ssh to other machines.
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How can I configure the font size for the tree item in the package explorer in Eclipse?
How can I configure the font size for the tree item in the package explorer/outline in Eclipse?
23 Answers
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Truncating all tables in a Postgres database
...from my PostgreSQL database before a rebuild. How would I do this directly in SQL?
11 Answers
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git pushes with wrong user from terminal
I have an issue with git and my terminal.
20 Answers
20
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How do I find the last occurrence of a substring in an NSString?
How would I get the last occurrence of an NSString within another NSString? For example, in "abc def ghi abc def ghi," I want to find the index of the second "abc," not the first. I know I could do this with a bunch of rangeOfStrings, but is there already a function for that?
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Select all elements with “data-” attribute without using jQuery
Using only JavaScript, what is the most efficient way to select all DOM elements that have a certain data- attribute (let's say data-foo ). The elements may be different tag elements.
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Brew update failed: untracked working tree files would be overwritten by merge
Trying to update Homebrew with brew update I got the following error
12 Answers
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Set cellpadding and cellspacing in CSS?
In an HTML table, the cellpadding and cellspacing can be set like this:
28 Answers
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