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How do I squash two non-consecutive commits?

...ocal, you will get There is no tracking information for the current branch error when rebasing. In this case you need to specify the number of commits you want to work with, like this: git rebase -i HEAD~4. See this answer. – johndodo May 16 '18 at 10:55 ...
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General suggestions for debugging in R

I get an error when using an R function that I wrote: 13 Answers 13 ...
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Cocoa Core Data efficient way to count entities

...ties:NO]; //Omit subentities. Default is YES (i.e. include subentities) NSError *err; NSUInteger count = [moc countForFetchRequest:request error:&err]; if(count == NSNotFound) { //Handle error } [request release]; s...
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Rails: Default sort order for a rails model?

...he block is evaluated at runtime. If you don't use a block you'll get this error: Support for calling #default_scope without a block is removed. For example instead of default_scope where(color: 'red'), please use default_scope { where(color: 'red') }. (Alternatively you can just redefine self.d...
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Location Manager Error : (KCLErrorDomain error 0)

Why does this error occur? 15 Answers 15 ...
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nodeJs callbacks simple example

... this next line: usingItNow(myCallback); With Respect to the Node-Style Error Conventions Costa asked what this would look like if we were to honor the node error callback conventions. In this convention, the callback should expect to receive at least one argument, the first argument, as an err...
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How do I catch an Ajax query post error?

I would like to catch the error and show the appropriate message if the Ajax request fails. 8 Answers ...
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convert String to DateTime

... works nicely in Rails 3.2.3 using Ruby 1.9.3 ... "2012-05-16 02:30 UTC".to_datetime => Wed, 16 May 2012 02:30:00 +0000 – Tilo May 22 '12 at 21:59 59 ...
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How are parameters sent in an HTTP POST request?

...guages will probably handle this for you. The exception to this is the 415 error. No framework can predict which content-types your application chooses to support and/or not support. This is up to you. PUT (relevant RFC section) A PUT request is pretty much handled in the exact same way as a POST ...
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Named regular expression group “(?Pregexp)”: what does “P” stand for?

... as the extension syntax. ? immediately after a parenthesis was a syntax error because the ? would have nothing to repeat, so this didn’t introduce any compatibility problems. The characters immediately after the ? indicate what extension is being used, so (?=foo) is one thing (a positiv...