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Does Ruby have a string.startswith(“abc”) built in method?

Does Ruby have a some_string.starts_with("abc") method that's built in? 4 Answers 4 ...
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Comparing arrays in JUnit assertions, concise built-in way?

...on two like-typed arrays in JUnit? By default (at least in JUnit 4) it seems to do an instance compare on the array object itself. ...
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Undo svn add without reverting local edits

...of files that shouldn't be in the repository. I also have local edits in some files that I want to keep. Is there a simple way to just undo the svn add without reverting the local edits? The main suggestion I see on Google is svn revert , which supposedly undoes the local edits. ...
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Programmatically set height on LayoutParams as density-independent pixels

Is there any way to set the height/width of a LayoutParams as density-independent pixels (dp)? It looks like the height/width, when set programmatically, are in pixels and not dp. ...
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“Insert if not exists” statement in SQLite

I have an SQLite database. I am trying to insert values ( users_id , lessoninfo_id ) in table bookmarks , only if both do not exist before in a row. ...
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dplyr: “Error in n(): function should not be called directly”

I am attempting to reproduce one of the examples in the dplyr package but am getting this error message. I am expecting to see a new column n produced with the frequency of each combination. What am I missing? I triple checked that the package is loaded. ...
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What's the easiest way to call a function every 5 seconds in jQuery? [duplicate]

... share | improve this answer | follow | edited Aug 29 '18 at 10:33 Vladimir verleg ...
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Simulate airplane mode in iPhone Simulator

Is there any way to simulate airplane mode in the iPhone Simulator? 4 Answers 4 ...
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Overwrite or override

It might seem to be a stupid question but I'm just so curious and want to use the correct term when talking about the issue. Couldn't find a similar question here so I decided to create a new one. ...
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Deprecated warning for Rails 4 has_many with order

I have this model in my rails app which throws warning when I try to create records in console. 5 Answers ...