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Finding ALL duplicate rows, including “elements with smaller subscripts”

...ovide a reproducible example, so here's an illustration kindly contributed by @jbaums vec <- c("a", "b", "c","c","c") vec[duplicated(vec) | duplicated(vec, fromLast=TRUE)] ## [1] "c" "c" "c" Edit: And an example for the case of a data frame: df <- data.frame(rbind(c("a","a"),c("b","b"),...
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Get element from within an iFrame

... var iframe = document.getElementById('iframeId'); var innerDoc = (iframe.contentDocument) ? iframe.contentDocument : iframe.contentWindow.document; You could more simply write: var iframe = document.getElementById('iframeId'); var innerDoc = iframe.conte...
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What is the LD_PRELOAD trick?

... It is secured by the fact the loader will ignore LD_PRELOAD if ruid != euid -- Joshua – Joshua Jan 8 '09 at 22:30 19 ...
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Get second child using jQuery

...second-child-selector The $(t).first().next() method is the fastest here, by far. But, on the other hand, if you take the <tr> node and find the <td> children and and run the same test, the results won't be the same. Hope it helps. :) ...
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How to convert an NSString into an NSNumber

...k if it's related to your locale. The NSNumberFormatter (as far as I know) by default uses the US locale, i.e. expects the decimal separator to be the "." character. If you use "," to separate the fraction, you may need to tell the formatter to use your current locale: [f setLocale:[NSLocale current...
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nodejs get file name from absolute path?

...s / (i.e. you are writing for a specific platform/environment), as implied by the example in your question, you could keep it simple and split the string by separator: '/foo/bar/baz/asdf/quux.html'.split('/').pop() That would be faster (and cleaner imo) than replacing by regular expression. Agai...
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What is the purpose of mock objects?

...lemented different ways: a fake cook - a someone pretending to be a cook by using frozen dinners and a microwave, a stub cook - a hot dog vendor that always gives you hot dogs no matter what you order, or a mock cook - an undercover cop following a script pretending to be a cook in a sting operati...
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Difference between global and device functions

... explain it with an example: main() { // Your main function. Executed by CPU } __global__ void calledFromCpuForGPU(...) { //This function is called by CPU and suppose to be executed on GPU } __device__ void calledFromGPUforGPU(...) { // This function is called by GPU and suppose to be exe...
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Populate data table from data reader

... imageUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454...
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Targeting position:sticky elements that are currently in a 'stuck' state

...ize", () => lowestKnownOffset = -1); const $Title = document.getElementById("Title"); let requestedFrame: number; window.addEventListener("scroll", (event) => { if (requestedFrame) { return; } requestedFrame = requestAnimationFrame(() => { // if it's sticky to top, the offs...