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Create a “with” block on several context managers? [duplicate]
Suppose you have three objects you acquire via context manager, for instance A lock, a db connection and an ip socket.
You can acquire them by:
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Why exactly is eval evil?
I know that Lisp and Scheme programmers usually say that eval should be avoided unless strictly necessary. I’ve seen the same recommendation for several programming languages, but I’ve not yet seen a list of clear arguments against the use of eval . Where can I find an account of the potentia...
How do I use a custom deleter with a std::unique_ptr member?
I have a class with a unique_ptr member.
6 Answers
6
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Foreign Key naming scheme
I'm just getting started working with foreign keys for the first time and I'm wondering if there's a standard naming scheme to use for them?
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Is it better in C++ to pass by value or pass by constant reference?
Is it better in C++ to pass by value or pass by constant reference?
10 Answers
10
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How to fix Git error: object file is empty?
When I try to commit changes, I get this error:
24 Answers
24
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Is there a bash command which counts files?
Is there a bash command which counts the number of files that match a pattern?
14 Answers
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In plain English, what does “git reset” do?
I have seen interesting posts explaining subtleties about git reset .
7 Answers
7
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What is declarative programming? [closed]
I keep hearing this term tossed around in several different contexts. What is it?
18 Answers
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RGB to hex and hex to RGB
How to convert colors in RGB format to hex format and vice versa?
50 Answers
50
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