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How do I debug error ECONNRESET in Node.js?
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You might have guessed it already: it's a connection error.
"ECONNRESET" means the other side of the TCP conversation abruptly closed its end of the connection. This is most probably due to one or more application protocol errors. You could look at the API server logs to see if it complains a...
Export and Import all MySQL databases at one time
...ll the answers I see on this question can have problems with the character sets in some databases due to the problem of redirecting the exit of mysqldump to a file within the shell operator >.
To solve this problem you should do the backup with a command like this
mysqldump -u root -p --opt --a...
What does Visual Studio mean by normalize inconsistent line endings?
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Is there a general setting which affects all files together? Its a pain to do this for all sources under a solution.
– Klaus
Jul 28 '16 at 7:32
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Why java.io.File doesn't have a close() method?
... editor after snippets, if snippets enabled
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Is there a way to access an iteration-counter in Java's for-each loop?
...va.util.*;
public class TestApp {
public static void AddAndDump(AbstractSet<String> set, String str) {
System.out.println("Adding [" + str + "]");
set.add(str);
int i = 0;
for(String s : set) {
System.out.println(" " + i + ": " + s);
i++;
}
}
publi...
Python vs Cpython
... programming language; these are implemented in Java, C# and RPython (a subset of Python), respectively. Jython compiles your Python code to Java bytecode, so your Python code can run on the JVM. IronPython lets you run Python on the Microsoft CLR. And PyPy, being implemented in (a subset of) Python...
Could I change my name and surname in all previous commits?
...its will be the same as the author). If you want to rewrite those as well, set the GIT_COMMITTER_NAME and GIT_COMMITTER_EMAIL variables.
The standard warning about rewriting history applies; only do it to history that has not yet been shared.
June 2018 Update
The manual now includes a solution, u...
How do I flush the cin buffer?
How do I clear the cin buffer in C++?
13 Answers
13
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Combine two ActiveRecord::Relation objects
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Instead of searching for right method creating an union from these two sets, I focused on algebra of sets. You can do it in different way using De Morgan's law
ActiveRecord provides merge method (AND) and also you can use not method or none_of (NOT).
search.where.none_of(search.where.not(id: ...
How can I recover a removed file in Mercurial (if at all)?
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Quote from comment:
I set up a repository, committed all, Removed and then committed again
If this is the case then you just need to update the working directory to the previous revision:
$ hg update -C -r-2
Note the negative revision number....