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Error: could not find function … in R

...ntains the function? install.packages("thePackage") (this only needs to be done once) Did you attach that package to the workspace ? require(thePackage) or library(thePackage) (this should be done every time you start a new R session) Are you using an older R version where this function didn't exis...
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Securely storing environment variables in GAE with app.yaml

...I push app.yaml to GitHub, this information becomes public (not good). I don't want to store the info in a datastore as it does not suit the project. Rather, I'd like to swap out the values from a file that is listed in .gitignore on each deployment of the app. ...
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Failed to load JavaHL Library

... If you do not need to use JavaHL, Subclipse also provides a pure-Java SVN API library -- SVNKit (http://svnkit.com). Just install the SVNKit client adapter and library plugins from the Subclipse update site and then choose it in th...
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How to see the changes in a Git commit?

When I do git diff COMMIT I see the changes between that commit and HEAD (as far as I know), but I would like to see the changes that were made by that single commit. ...
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How to format time since xxx e.g. “4 minutes ago” similar to Stack Exchange sites

... @hello - yeah, single point of exit has it's virtues when it doesn't get in the way. those that take it too seriously these days are misunderstanding the origin of the maxim. – Sky Sanders Jul 5 '10 at 16:56 ...
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Why can't I stop vim from wrapping my code?

... local to buffer Number of characters from the right window border where wrapping starts. When typing text beyond this limit, an <EOL> will be inserted and inserting continues on the next line. Options that add a margin, such as 'number' and 'foldcol...
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What is Data Transfer Object?

...so make use of DTO assemblers. The assemblers are used to create DTOs from Domain Objects, and vice versa. The conversion from Domain Object to DTO and back again can be a costly process. If you're not creating a distributed application, you probably won't see any great benefits from the pattern, a...
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Why JavaScript rather than a standard browser virtual machine?

...nguage" for the web, with other better designed languages and APIs compile down to it (and cater for different runtime engine foibles). I don't think, however, any of these "better designed languages" will be Java, Python or Ruby. Javascript is, despite the ability to be used elsewhere, a Web appli...
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Cryptic “Script Error.” reported in Javascript in Chrome and Firefox

...-origin policy - i.e. when the error occurs in a script that's hosted on a domain other than the domain of the current page. This behavior is intentional, to prevent scripts from leaking information to external domains. For an example of why this is necessary, imagine accidentally visiting evilsit...
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How to place div side by side

...ne that is fixed width and the other that fills the rest of the space. How do i float the second div to fill the rest of the space. Thanks for any help. ...