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Scala: join an iterable of strings
How do I "join" an iterable of strings by another string in Scala?
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ALTER TABLE, set null in not null column, PostgreSQL 9.1
I have a table with not null column, How to set a null value in this column as default?
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How do I change tab size in Vim?
Every time I add a selector in CSS and I press Enter to define the properties it ends up like this:
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Do using statements and await keywords play nicely in c#
I have a situation where I am making an async call to a method that returns and IDisposable instance. For example:
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Reason to Pass a Pointer by Reference in C++?
Under which circumstances would you want to use code of this nature in c++?
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MongoDB aggregation framework match OR
Is it possible to do an OR in the $match?
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When should i use npm with “-g” flag and why?
I've started using npm for js package management recently. Although I do have a fair understanding of package management in different enivronments(lets say using apt, rvm/gem, pythonbrew/virtualenv/pip), I don't quite understand how npm fully fits in.
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Get record counts for all tables in MySQL database
Is there a way to get the count of rows in all tables in a MySQL database without running a SELECT count() on each table?
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“Header Search Paths” vs. “User Header Search Paths” in Xcode?
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Use the User Header Search Paths for paths you want searched for #include "..." and use the Header Search Paths for #include <...>. Of course, if you check the option to Always Search User Paths, then #include <...> will also work for the user paths.
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psql: FATAL: role “postgres” does not exist
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NOTE: If you installed postgres using homebrew, see the comment from @user3402754 below.
Note that the error message does NOT talk about a missing database, it talks about a missing role. Later in the login process it might also stumble...