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Cycles in family tree software
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It seems you (and/or your company) have a fundamental misunderstanding of what a family tree is supposed to be.
Let me clarify, I also work for a company that has (as one of its products) a family tree in its portfolio, and we have been struggling w...
What is so bad about singletons? [closed]
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community wiki
4 revs, 4 users 65%Jim Burger
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PostgreSQL Crosstab Query
... CASE and GROUP BY
\crosstabview in psql
Postgres 9.6 added this meta-command to its default interactive terminal psql. You can run the query you would use as first crosstab() parameter and feed it to \crosstabview (immediately or in the next step). Like:
db=> SELECT section, status, ct FRO...
How should I log while using multiprocessing in Python?
...the log files at the end of the run, sorted by timestamp
If using pipes (recommended): Coalesce log entries on-the-fly from all pipes, into a central log file. (E.g., Periodically select from the pipes' file descriptors, perform merge-sort on the available log entries, and flush to centralized log. ...
Mocking member variables of a class using Mockito
... way of accessing the member variables so you can pass in a mock (the most common ways would be a setter method or a constructor which takes a parameter).
If your code doesn't provide a way of doing this, it's incorrectly factored for TDD (Test Driven Development).
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What is the use of the ArraySegment class?
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ArraySegment<T> has become a lot more useful in .NET 4.5+ and .NET Core as it now implements:
IList<T>
ICollection<T>
IEnumerable<T>
IEnumerable
IReadOnlyList<T>
IReadOnlyCollection<T>
as opposed to the .NET 4 ver...
Is there an advantage to use a Synchronized Method instead of a Synchronized Block?
...r object as lock whereas syncing the method would lock the entire object.
Compare:
// locks the whole object
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private synchronized void someInputRelatedWork() {
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}
private synchronized void someOutputRelatedWork() {
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}
vs.
// Using specific locks
Object inputLock = new Obj...
Get the closest number out of an array
...reducer.bind(null, goal)); ---------- I don't know how to put code in the comments hahaha.
– Mauricio Soares
Jan 22 '16 at 18:12
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Code Golf: Collatz Conjecture
Inspired by http://xkcd.com/710/ here is a code golf for it.
70 Answers
70
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What is the difference between typeof and instanceof and when should one be used vs. the other?
...; // true
typeof function() {} == 'function'; // true
Use instanceof for complex built in types:
/regularexpression/ instanceof RegExp; // true
typeof /regularexpression/; // object
[] instanceof Array; // true
typeof []; //object
{} instanceof Object; // true
typeof {}; // object
And the las...