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How does Rails keep track of which migrations have run for a database?
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Rails creates a table in your database called schema_migrations to keep track of which migrations have run.
The table contains a single column, version. When Rails runs a migration, it takes the leading digits in the migration's file name and inserts a row f...
Get environment variable value in Dockerfile
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Best answer here, and based on that, was able to do: envsubst < ./Dockerfile | docker build -squash -t ${DOCKIMG}:${VERSION} . -f - where the FROM line is using the environment variable.
– mikequentel
May ...
AJAX in Chrome sending OPTIONS instead of GET/POST/PUT/DELETE?
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Based on the fact that the request isn't sent on the default port 80/443 this Ajax call is automatically considered a cross-origin resource (CORS) request, which in other words means that the request automatically issues an O...
JavaScript hard refresh of current page
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Python - use list as function parameters
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Resolving conflicts: how to accept “their” changes automatically?
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Can I get Memcached running on a Windows (x64) 64bit environment?
...ave released a build of memcached 1.4.4 for Windows x64:
http://blog.couchbase.com/memcached-windows-64-bit-pre-release-available
http://labs.northscale.com/memcached-packages/
UPDATE: they have recently released Memcached Server - still FREE but enhanced distro with clustering, web-based admin/s...
Determining the size of an Android view at runtime
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Based on @mbaird's advice, I found a workable solution by subclassing the ImageView class and overriding onLayout(). I then created an observer interface which my activity implemented and passed a reference to itself to the ...
Retrieve only the queried element in an object array in MongoDB collection
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$redact "restricts the contents of the documents based on information stored in the documents themselves". So it will run only inside of the document. It basically scans your document top to the bottom, and checks if it matches with your if condition which is in $cond, if t...
Get Selected index of UITableView
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