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C++ static virtual members?
Is it possible in C++ to have a member function that is both static and virtual ? Apparently, there isn't a straightforward way to do it ( static virtual member(); is a compile error), but is there at least a way to achieve the same effect?
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Change date of git tag (or GitHub Release based on it)
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WARNING: This will not preserve tag messages for annotated tags.
Summary
For each tag that needs to be changed:
Go back in time to the commit representing the tag
Delete the tag (locally and remotely)
This will turn your "Release" on GitHub into a Draft that you ...
Convert absolute path into relative path given a current directory using Bash
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Using realpath from GNU coreutils 8.23 is the simplest, I think:
$ realpath --relative-to="$file1" "$file2"
For example:
$ realpath --relative-to=/usr/bin/nmap /tmp/testing
../../../tmp/testing
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Partly cherry-picking a commit with Git
I'm working on 2 different branches: release and development .
7 Answers
7
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Split string into an array in Bash
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IFS=', ' read -r -a array <<< "$string"
Note that the characters in $IFS are treated individually as separators so that in this case fields may be separated by either a comma or a space rather than the sequence of t...
Remove all elements contained in another array
I am looking for an efficient way to remove all elements from a javascript array if they are present in another array.
14 A...
How can I hash a password in Java?
I need to hash passwords for storage in a database. How can I do this in Java?
13 Answers
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What is the performance cost of having a virtual method in a C++ class?
Having at least one virtual method in a C++ class (or any of its parent classes) means that the class will have a virtual table, and every instance will have a virtual pointer.
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Is it safe to check floating point values for equality to 0?
...quality between double or decimal type values normally, but I'm wondering if 0 is a special case.
9 Answers
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List comprehension on a nested list?
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Here is how you would do this with a nested list comprehension:
[[float(y) for y in x] for x in l]
This would give you a list of lists, similar to what you started with except with floats instead of strings. If you want one flat list then you would use [float(y) for x in l for y in x].
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