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Speed up the loop operation in R

I have a big performance problem in R. I wrote a function that iterates over a data.frame object. It simply adds a new column to a data.frame and accumulates something. (simple operation). The data.frame has roughly 850K rows. My PC is still working (about 10h now) and I have no idea about the...
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Do git tags get pushed as well?

Since I created my repository it appears that the tags I have been creating are not pushed to the repository. When I do git tag on the local directory all the tags are present, but when I logon to the remote repository and do a git tag , only the first few show up. ...
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What exactly is an Assembly in C# or .NET?

...ed output of your code, typically a DLL, but your EXE is also an assembly. It's the smallest unit of deployment for any .NET project. The assembly typically contains .NET code in MSIL (Microsoft Intermediate language) that will be compiled to native code ("JITted" - compiled by the Just-In-Time com...
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Can Go compiler be installed on Windows?

...n looking on golang.org for a Windows compiler, but I can't seem to find it. I can only see Linux and OS X compilers. Does anyone know if Go programming can be done on Windows, or is it something that Google hasn't implemented yet? ...
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How to remove a web site from google analytics

I am Administrator of several web sites on google analytics. 10 Answers 10 ...
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“Invalid form control” only in Google Chrome

...below works well in Safari but in Chrome and Firefox the form will not submit. Chrome console logs the error An invalid form control with name='' is not focusable . Any ideas? ...
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Fade/dissolve when changing UIImageView's image

Rather than creating two UIImageViews , it seems logical to simply change the image of one view. If I do that, is there anyway of having a fade/cross dissolve between the two images rather than an instant switch? ...
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What is “with (nolock)” in SQL Server?

Can someone explain the implications of using with (nolock) on queries, when you should/shouldn't use it? 16 Answers ...
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Detect Click into Iframe using JavaScript

I understand that it is not possible to tell what the user is doing inside an iframe if it is cross domain. What I would like to do is track if the user clicked at all in the iframe . I imagine a scenario where there is an invisible div on top of the iframe and the the div will just then ...
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How to find the sum of an array of numbers

Given an array [1, 2, 3, 4] , how can I find the sum of its elements? (In this case, the sum would be 10 .) 43 Answers ...