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How to work with Git branches and Rails migrations

... @pisaruk I know you answered this six years ago, but reading I'm curious what an example of a non-reversible migration would be. I'm having a hard time imagining a situation. I guess the simplest would be a dropped column containing a ...
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Repairing Postgresql after upgrading to OSX 10.7 Lion

... It's a PATH issue. Mac OSX Lion includes Postgresql in the system now. If you do a which psql you'll likely see usr/bin/psql instead of usr/local/bin/psql which is HomeBrew's correct one. If you run brew doctor you should get a message stating that you need to add usr/local/bin to the head ...
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UIButton won't go to Aspect Fit in iPhone

... Yeah tried that, but now can't get the button to refit to the image – marty Aug 11 '10 at 21:34 ...
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Why does Internet Explorer not send HTTP post body on Ajax call after failure?

... The article now mentions up to IE11, so it looks like this was never fixed. – peater May 6 '15 at 15:24 ...
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How do I uninstall nodejs installed from pkg (Mac OS X)?

I installed NodeJS from pkg file on my Mac. Now I need to uninstall it. Tell me please how to do it. I tried to remove files from this list: ...
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How do you disable viewport zooming on Mobile Safari?

...lease notes: To improve accessibility on websites in Safari, users can now pinch-to-zoom even when a website sets user-scalable=no in the viewport. So as far as I understand, we are sh** out of luck. share ...
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How do I shuffle an array in Swift?

...a bit of updating as countElements is gone, and it’s replacement, count, now returns a T.Index.Distance so the constraint needs to be on C.Index.Distance == Int. This version should work: gist.github.com/airspeedswift/03d07a9dc86fabdc370f – Airspeed Velocity ...
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How do I do base64 encoding on iOS?

...s) of data objRawData += 3; intLength -= 3; } // now deal with the tail end of things if (intLength != 0) { *objPointer++ = _base64EncodingTable[objRawData[0] >> 2]; if (intLength > 1) { *objPointer++ = _base64EncodingTable[((objRawD...
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Assign multiple columns using := in data.table, by group

... This now works in v1.8.3 on R-Forge. Thanks for highlighting it! x <- data.table(a = 1:3, b = 1:6) f <- function(x) {list("hi", "hello")} x[ , c("col1", "col2") := f(), by = a][] # a b col1 col2 # 1: 1 1 hi hello # ...
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How can I find the method that called the current method?

... how can I learn the name of the method that called the current method? I know all about System.Reflection.MethodBase.GetCurrentMethod() , but I want to go one step beneath this in the stack trace. I've considered parsing the stack trace, but I am hoping to find a cleaner more explicit way, somethi...