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Best way to convert an ArrayList to a string
I have an ArrayList that I want to output completely as a String. Essentially I want to output it in order using the toString of each element separated by tabs. Is there any fast way to do this? You could loop through it (or remove each element) and concatenate it to a String but I think this wi...
How can I find out if I have Xcode commandline tools installed?
I need to use gdb.
6 Answers
6
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Dictionary returning a default value if the key does not exist [duplicate]
I find myself using the current pattern quite often in my code nowadays
4 Answers
4
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Does Android support near real time push notification?
I recently learned about the ability of iPhone apps to receive nearly instantaneous notifications to apps notifications to apps .
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SQL Server: Get table primary key using sql query [duplicate]
I want to get a particular table's primary key using SQL query for SQL Server database.
10 Answers
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How to fallback to local stylesheet (not script) if CDN fails
I am linking to the jQuery Mobile stylesheet on a CDN and would like to fall back to my local version of the stylesheet if the CDN fails. For scripts the solution is well known:
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Need a good hex editor for Linux [closed]
I need a good HEX editor for Linux, and by good I mean:
4 Answers
4
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How do I replace NA values with zeros in an R dataframe?
I have a data frame and some columns have NA values.
21 Answers
21
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Authenticate Jenkins CI for Github private repository
I'd like for Jenkins to automagically fetch data from my private repository hosted on Github.
But I have no idea how to accomplish that task.. Tried the documentation, generating ssh-key for jenkins user and all what I can see is: "unable to clone the repo". I've checked URLs - they are valid.
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How to tell if node.js is installed or not
I've recently installed node.js and I have no idea how to run applications. I installed node.js but couldn't find further instructions. What does one really need to do? I wanted to see if it was actually working. So I executed a script called hello.js. It went as such:
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