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How do you delete an ActiveRecord object?
... 'value') will allow you to delete records
without a primary key
Note: from @hammady's comment, user.destroy won't work if User model has no primary key.
Note 2: From @pavel-chuchuva's comment, destroy_all with conditions and delete_all with conditions has been deprecated in Rails 5.1 - see gui...
Getting full URL of action in ASP.NET MVC [duplicate]
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Using the Scheme from the original URL ensure that you do not move from HTTPS to HTTP by mistake. Prevent TLS disclosure. You get my vote.
– Pierre-Alain Vigeant
Jul 16 '12 at 15:55
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Mapping two integers to one, in a unique and deterministic way
... two N bit integers. That is, if my inputs are two 16 bit integers ranging from 0 to 2^16 -1, then there are 2^16 * (2^16 -1) combinations of inputs possible, so by the obvious Pigeonhole Principle, we need an output of size at least 2^16 * (2^16 -1), which is equal to 2^32 - 2^16, or in other words...
Difference between path.normalize and path.resolve in Node.js
...ove would've been ../node, because that's the shortest path one could take from /Users/mtilley/src/testing to /Users/mtilley/src/node.
Ironically, this means that path.resolve() produces a relative path in absolute terms (you could execute it anywhere, and it would produce the same result), whereas...
What is tail call optimization?
...ion because the calling function will simply return the value that it gets from the called function. The most common use is tail-recursion, where a recursive function written to take advantage of tail-call optimization can use constant stack space.
Scheme is one of the few programming languages tha...
Generate a UUID on iOS from Swift
...alue back out, you can use uuid.UUIDString.
Note that NSUUID is available from iOS 6 and up.
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What is the best way to remove accents (normalize) in a Python unicode string?
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@lenz, I wasn't talking about removing accents from Greek, but about the "stroke" on the ell. Since it is not a diacritic, changing it to plain ell is the same as changing Greek Alpha to A. If don't want it don't do it, but in both cases you're substituting a Latin (near)...
HTML5 placeholder css padding
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I got the same issue.
I fixed it by removing line-height from my input. Check if there is some lineheight which is causing the problem
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Moment.js - how do I get the number of years since a date, not rounded up?
...person's age using Moment.js , but I'm finding that the otherwise useful fromNow method rounds up the years. For instance, if today is 12/27/2012 and the person's birth date is 02/26/1978, moment("02/26/1978", "MM/DD/YYYY").fromNow() returns '35 years ago'. How can I make Moment.js ignore the n...
When do you use Java's @Override annotation and why?
...In case anyone else got here because of the apparently undocumented change from 1.5 to 1.6 for @Overrides on methods coming from interfaces, bugs.sun.com/bugdatabase/view_bug.do?bug_id=5008260 seems to be the corresponding bug. (Thanks for pointing it out, Dave L.!)
– Henrik He...