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How do I dump an object's fields to the console?
When I'm running a simple Ruby script, what's the easiest way to dump an object's fields to the console?
9 Answers
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Total size of the contents of all the files in a directory [closed]
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If you want the 'apparent size' (that is the number of bytes in each file), not size taken up by files on the disk, use the -b or --bytes option (if you got a Linux system with GNU coreutils):
% du -sbh <directory>
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Transposing a 2D-array in JavaScript
...nd updated some of the code for a more modern syntax:
One-liners inspired by Fawad Ghafoor and Óscar Gómez Alcañiz
function transpose(matrix) {
return matrix[0].map((col, i) => matrix.map(row => row[i]));
}
function transpose(matrix) {
return matrix[0].map((col, c) => matrix.map((...
Configuring diff tool with .gitconfig
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What do you mean by a pre-configured "out-of-the-box" difftool? To set-up an external diff tool "winMerge" which is not in your list I had to do the very same setting which you have mentioned in your post and everything started to work withou...
What is ASP.NET Identity's IUserSecurityStampStore interface?
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The UseCookieAuthentication is deprecated by now. I managed to configure it using services.Configure<SecurityStampValidatorOptions>(o => o.ValidationInterval = TimeSpan.FromSeconds(10));.
– riezebosch
Sep 6 '17 at 7:07
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How do I list the symbols in a .so file
...t those that are defined in this .so file, not in the libraries referenced by it. Seventh column should contain a number in this case. You can extract it by using a simple regex:
readelf -Ws /usr/lib/libstdc++.so.6 | grep '^\([[:space:]]\+[^[:space:]]\+\)\{6\}[[:space:]]\+[[:digit:]]\+'
or, as ...
What does .class mean in Java?
...resents the class Print on runtime. It is the same object that is returned by the getClass() method of any (direct) instance of Print.
Print myPrint = new Print();
System.out.println(Print.class.getName());
System.out.println(myPrint.getClass().getName());
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Composer install error - requires ext_curl when it's actually enabled
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sudo apt-get install php7.3-curl
Or simply run below command to install by your version:
sudo apt-get install php-curl
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Java: How to test methods that call System.exit()?
...ch might be useful someday).
In the JUnit scenario it will be caught by the JUnit framework, which will report that
such-and-such test failed and move smoothly along to the next.
Prevent System.exit() to actually exit the JVM:
Try modifying the TestCase to run with a security manager...
std::back_inserter for a std::set?
...et doesn't have push_back because the position of an element is determined by the comparator of the set. Use std::inserter and pass it .begin():
std::set<int> s1, s2;
s1 = getAnExcitingSet();
transform(s1.begin(), s1.end(),
std::inserter(s2, s2.begin()), ExcitingUnaryFunctor());
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