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Uninstall old versions of Ruby gems

... | edited Dec 28 '13 at 23:39 Steven Penny 76.1k4545 gold badges296296 silver badges336336 bronze badges ...
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php stdClass to array

...n_encode and json_decode methods. These are automatically bundled in PHP 5.2.0 and up. If you use any older version there's also a PECL library (that said, in that case you should really update your PHP installation. Support for 5.1 stopped in 2006.) Converting an array/stdClass -> stdClass $...
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How to delete a folder with files using Java

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What does the (unary) * operator do in this Ruby code?

... 271 The * is the splat operator. It expands an Array into a list of arguments, in this case a lis...
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Understanding generators in Python

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ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file

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How to change language settings in R

...l set it to French and then back again: > Sys.setenv(LANG = "fr") > 2 + x Erreur : objet 'x' introuvable > Sys.setenv(LANG = "en") > 2 + x Error: object 'x' not found A list of the abbreviations can be found here. Sys.getenv() gives you a list of all the environment variables that ar...
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How do you log content of a JSON object in Node.js?

... 279 Try this one: console.log("Session: %j", session); If the object could be converted into JS...
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Lists in ConfigParser

...is way your config section would look like: [Section 3] barList=item1,item2 It's not pretty but it's functional for most simple lists. share | improve this answer | follow...
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Speed up the loop operation in R

...possible. I took your function, change indexing and here version_A dayloop2_A <- function(temp){ res <- numeric(nrow(temp)) for (i in 1:nrow(temp)){ res[i] <- i if (i > 1) { if ((temp[i,6] == temp[i-1,6]) & (temp[i,3] == temp[i-1,...