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Create PostgreSQL ROLE (user) if it doesn't exist
...t to create a ROLE in PostgreSQL 9.1, but without raising an error if it already exists?
10 Answers
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Appending to an empty DataFrame in Pandas?
... I didn't realize that I had to store the output... I probably should have read the documentation better, but I appreciate it, @DSM!
– ericmjl
May 16 '13 at 21:06
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Renaming a branch in GitHub
...set local branch to track the new remote
If you need step-by-step you can read this great article:
How to Rename Git Local and Remote Branches
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What's the best method in ASP.NET to obtain the current domain?
..."figure" http or https, simlpy put "//" before it. So for example it would read as href="//@Request.Url.Authority..."
– EdwardM
Nov 2 '16 at 23:23
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Is there any Rails function to check if a partial exists?
... print something if the partial is missing, though?
Edit 1: Oh, I fail at reading comprehension. You did say that you wanted to render something else. In that case, how about this?
<%= render :partial => "#{dynamic_partial}" rescue render :partial => 'partial_that_actually_exists' %>...
How to check if IEnumerable is null or empty?
...rtially (although that still means it is consumed) - it might only need to read one element (especially if there is no predicate). As such, since sequences (IEnumerable<T>) do not need to be repeatable, that might be it. Any() without a predicate is essentially equivalent to foreach(var x in s...
Entity Framework - Code First - Can't Store List
...it will turn a single entry into multiple entries but it is the easiest to read and most concise.
The problem with CAD bloke's answer is that it is ugly and requires the model to be altered which is a bad design practice (see Marcell Toth's comment on Sasan's answer). But it is the only answer that...
Get TransactionScope to work with async / await
...o integrate async / await into our service bus.
I implemented a SingleThreadSynchronizationContext based on this example http://blogs.msdn.com/b/pfxteam/archive/2012/01/20/10259049.aspx .
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Changing one character in a string
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Those looking for speed/efficiency, read this
– AneesAhmed777
Apr 19 '17 at 20:27
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What is the Simplest Way to Reverse an ArrayList?
...re trying to access j (the last index of the original ArrayList) but you already removed the object at that index?
– Tony Chan
Nov 7 '14 at 2:51
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