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Pass column name in data.table using variable [duplicate] Possible Duplicate: Variably selecting/assigning to fields in a data.table In following example, I am creating a data table having column name ‘x’ and ‘v’ library('data.table') DT

Restrict Login Email with Google OAuth2.0 to Specific Domain Name I can't seem to find any documentation on how to restrict the login to my web application (which uses OAuth2.0 and Google APIs) to only accept authentication requests from users with an email on a specific domain name or set of domain names. I would like to whitelist as opposed to blacklist. Does anyone have suggestions on how to ..

Simple Explanation for the “Reactor Pattern” with its Applications [closed] Reactor pattern is explained in wikipedia, and it's a bit too abstract. Can you describe this pattern in a more concrete way? Ideally with code snippets or high-level class diagrams describing some applications of reactor pattern. You'll might want to check the original paper describing it http://www.dre.vanderbilt.edu/~..

JavaScript Exception Handling What is the best technique for catching ALL exceptions thrown within JavaScript? Obviously, the best technique is to use try...catch. But with ansynchronous callbacks and so forth, that can get tricky. I know IE and Gecko browsers support window.onerror, but what about Opera and Safari? Here are a bunch of test-cases that I would like to have a central exception han..

github readme.md에서 현재 분기 참조 내 github repo의 readme.md 파일에는 Travis-CI 배지가 있습니다. 다음 링크를 사용합니다. https://travis-ci.org/joegattnet/joegattnet_v3.png?branch=staging 명백한 문제는 분기가 하드 코딩된다는 것입니다. 분기가 현재보고있는 분기가되도록 일종의 변수를 사용할 수 있습니까? 내가 아는 한에서는 아니다. GitHub 지원 확인 ( OP Joe Gatt 의 의견을 통해 ) 이를 수행하는 유일한 방법은 github의 http 참조 헤더를 사용하여 참조되는 분기를 확인한 다음 Travis CI에서 적절한 이미지를 가져 오는 내 서비스를 통해 링크를 전달하는 것입니다. 독자가 .NET Fra..