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Saving enum from select in Rails 4.1
...ast.status
Contract Load (0.2ms) SELECT "contracts".* FROM "contracts" ORDER BY "contracts"."id" DESC LIMIT ? [["LIMIT", 1]]
=> "active"
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Learning Regular Expressions [closed]
...sing regular expressions! (The re in grep refers to regular expressions.)
Order from the menu
Adding just a little complexity, you can match either 'Nick' or 'nick' with the pattern [Nn]ick. The part in square brackets is a character class, which means it matches exactly one of the enclosed charac...
UIStatusBarStyle PreferredStatusBarStyle does not work on iOS 7
... wide solution.
@mxcl is correct in describing why this is happening. In order to correct it, we simply create an extension (or category in obj-c) that overrides the preferredSatusBarStyle() method of UINavigationController. Here is an example in Swift:
extension UINavigationController {
publ...
Stop Chrome Caching My JS Files
... that Chrome needs to have must-revalidate in the Cache-Control` header in order to re-check files to see if they need to be re-fetched.
You can always SHIFT-F5 and force Chrome to refresh, but if you want to fix this problem on the server, include this response header:
Cache-Control: must-revalid...
Maximum size of an Array in Javascript
...ions of datasets, and even then, the javascript calculation latency was on order of tens of milliseconds. Unless you're worried about going over the array size limit, I don't think you have much to worry about.
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Stateless vs Stateful - I could use some concrete information
...y relevant articles in that area.
Another area that you could research in order to gain more understanding is RESTful web services. These are by design "stateless", in contrast to other web technologies that try to somehow keep state. (In fact what you say that ASP.NET is stateless isn't correct - ...
How to see the changes in a Git commit?
...COMMIT^!
or
git diff-tree -p COMMIT
With git show, you would need (in order to focus on diff alone) to do:
git show --color --pretty=format:%b $COMMIT
The COMMIT parameter is a commit-ish:
A commit object or an object that can be recursively dereferenced to a commit object. The following...
Plotting two variables as lines using ggplot2 on the same graph
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Rails DB Migration - How To Drop a Table?
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@mjnissim and fflyer05 are correct, in order to avoid any weird thing you should recreate the table in the down method.
– Sebastialonso
Jan 23 '15 at 16:43
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Remove characters except digits from string using Python?
...op
is 50% slower than RE, so the .translate approach beats it by over an order of magnitude.
In Python 3, or for Unicode, you need to pass .translate a mapping (with ordinals, not characters directly, as keys) that returns None for what you want to delete. Here's a convenient way to express this ...