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The Role Manager feature has not been enabled

...s from code instead of web.config? I tried putting it in Application_Start and it says This method can only be called during the application's pre-start initialization phase. – Maslow May 8 '13 at 15:17 ...
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Save plot to image file instead of displaying it using Matplotlib

I am writing a quick-and-dirty script to generate plots on the fly. I am using the code below (from Matplotlib documentation) as a starting point: ...
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How do I move a redis database from one server to another?

I currently have a live redis server running on a cloud instance and I want to migrate this redis server to a new cloud instance and use that instance as my new redis server. If it were MySQL, I would export the DB from the old server and import it into the new server. How should I do this with redi...
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MySQL OPTIMIZE all tables?

MySQL has an OPTIMIZE TABLE command which can be used to reclaim unused space in a MySQL install. Is there a way (built-in command or common stored procedure) to run this optimization for every table in the database and/or server install, or is this something you'd have to script up yourself? ...
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Why can't variable names start with numbers?

...names are "numbers+alpha that don't parse to a valid numeric designation", and that's just silly. – eaolson Oct 11 '09 at 3:56 4 ...
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How to change the docker image installation directory?

...ker/daemon.json (according to https://docs.docker.com/engine/reference/commandline/dockerd/#daemon-configuration-file). With older versions, you can change Docker's storage base directory (where container and images go) using the -goption when starting the Docker daemon. (check docker --help). You ...
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Margin on child element moves parent element

...rent { overflow: hidden; } This prevents the margins to collapse. Border and padding do the same. Hence, you can also use the following to prevent a top-margin collapse: .parent { padding-top: 1px; margin-top: -1px; } Update by popular request: The whole point of collapsing margins is...
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unable to install pg gem

... I had this problem, this worked for me: Install the postgresql-devel package, this will solve the issue of pg_config missing. sudo apt-get install libpq-dev share | improve t...
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Is there Unicode glyph Symbol to represent “Search” [closed]

... There is U+1F50D LEFT-POINTING MAGNIFYING GLASS (????) and U+1F50E RIGHT-POINTING MAGNIFYING GLASS (????). You should use (in HTML) 🔍 or 🔎 They are, however not supported by many fonts (fileformat.info only lists a few fonts as supporting the Codepoint w...
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XMLHttpRequest Origin null is not allowed Access-Control-Allow-Origin for file:/// to file:/// (Serv

I'm trying to create a website that can be downloaded and run locally by launching its index file. 9 Answers ...