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UITableView row animation duration and completion callback

...o either specify the duration for UITableView row animations, or to get a callback when the animation completes? 10 Answers...
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How do I rename the extension for a bunch of files?

In a directory, I have a bunch of *.html files. I'd like to rename them all to *.txt 24 Answers ...
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Shortcut to exit scale mode in VirtualBox [closed]

...tings, as the Menu bar is hidden in Scale View. Had the same issue, especially when you checked the box not to show the 'Switch to Scale view' dialog. This you can do while the VM is running. share | ...
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How to run a single RSpec test?

... Usually I do: rspec ./spec/controllers/groups_controller_spec.rb:42 Where 42 represents the line of the test I want to run. EDIT1: You could also use tags. See here. EDIT 2: Try: bundle exec rspec ./spec/controllers/gro...
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How do I find a default constraint using INFORMATION_SCHEMA?

...efault value constraint SELECT default_constraints.name FROM sys.all_columns INNER JOIN sys.tables ON all_columns.object_id = tables.object_id INNER JOIN sys.schemas ON tables.schema_id = schemas.schema_id INNER JOIN sys.default_const...
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Merge (with squash) all changes from another branch as a single commit

In Git, is there a way to merge all changes from one branch into another, but squash to a single commit at the same time? ...
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What are the basic rules and idioms for operator overloading?

...::ios::failbit); return is; } When implementing operator>>, manually setting the stream’s state is only necessary when the reading itself succeeded, but the result is not what would be expected. Function call operator The function call operator, used to create function objects, also k...
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In Java, what is the best way to determine the size of an object?

...ect. Is there an easy way to find out the size of that object programmatically? Is there a reference that defines how large primitive types and object references are for a VM ? ...
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Measure elapsed time in Swift

...erence in nano seconds (UInt64) let timeInterval = Double(nanoTime) / 1_000_000_000 // Technically could overflow for long running tests print("Time to evaluate problem \(problemNumber): \(timeInterval) seconds") return theAnswer } Old answer For Swift 1 and 2, my function uses NSDate...
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How to create a new branch from a tag?

...Example: git branch <Hotfix branch> <TAG> git branch hotfix_4.4.3 v4.4.3 git checkout hotfix_4.4.3 or you can do with other command git checkout -b <Hotfix branch> <TAG> -b stands for creating new branch to local once you ready with your hotfix branch, It's tim...