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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 over the missing database.
But the first step is ...
How to access the GET parameters after “?” in Express?
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Mind that req.params is different from req.query! expressjs.com/en/api.html#req.params expressjs.com/en/api.html#req.query @adelriosantiago
– caesarsol
Jan 14 '19 at 11:28
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Match whitespace but not newlines
...he horizontal whitespace character class \h. This will match tab and space from the ASCII set, non-breaking space from extended ASCII, or any of these Unicode characters
U+0009 CHARACTER TABULATION
U+0020 SPACE
U+00A0 NO-BREAK SPACE (not matched by \s)
U+1680 OGHAM SPACE MARK
U+2000 EN QUAD
U+2001...
Entity Framework .Remove() vs. .DeleteObject()
You can remove an item from a database using EF by using the following two methods.
2 Answers
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Finding out whether a string is numeric or not
... check if a string is made up of numbers only. I am taking out a substring from a string and want to check if it is a numeric substring or not.
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What is the copy-and-swap idiom?
...re finished; this now manages an array, without leaks. However, it suffers from three problems, marked sequentially in the code as (n).
The first is the self-assignment test. This check serves two purposes: it's an easy way to prevent us from running needless code on self-assignment, and it prote...
Is there a difference between YES/NO,TRUE/FALSE and true/false in objective-c?
...t for specific values, so always use them as booleans and only assign them from their #define values.
Importantly, never test booleans using a character comparison -- it's not only risky because someVar could be assigned a non-zero value which is not YES, but, in my opinion more importantly, it fa...
Big-O summary for Java Collections Framework implementations? [closed]
... to specify for which case scenario are those figures, for example, delete from Arraylist could take O(n), if you delete element in middle or end of array.
– Popeye
Jul 25 '17 at 19:59
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Comparison of CI Servers? [closed]
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Geez. That matrix suffers from "DeathByOverload". Basic UX dictates that large grids are useless unless there's filtering. To add insult to injury, there's no download (csv) and the markdown cannot be downloaded directly. Even that resisted copying in...
Plot correlation matrix into a graph
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It looks very similar to example from OP (fonts, colors, layout). Looks like original was created with lattice too. Great detailed answer, +1.
– Marek
Mar 28 '11 at 5:16
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