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Create a variable name with “paste” in R?
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In my case function eval() works very good. Below I generate 10 variables and assign them 10 values.
lhs <- rnorm(10)
rhs <- paste("perf.a", 1:10, "<-", lhs, sep="")
eval(parse(text=rhs))
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Error :Request header field Content-Type is not allowed by Access-Control-Allow-Headers
...s-support-in-asp-net-web-api-rc-version.aspx". It is working successfully, and i post data from client side to server successfully.
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What is the python “with” statement designed for?
...r the first time today. I've been using Python lightly for several months and didn't even know of its existence! Given its somewhat obscure status, I thought it would be worth asking:
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How can I fill a div with an image while keeping it proportional?
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If I correctly understand what you want, you may leave the width and height attributes off the image to maintain aspect ratio and use flexbox to do the centering for you.
.fill {
display: flex;
justify-content: center;
align-it...
Redirect website after certain amount of time
... </body>
</html>
Note that use of meta refresh is deprecated and frowned upon these days, but sometimes it's the only viable option (for example, if you're unable to do server-side generation of HTTP redirect headers and/or you need to support non-JavaScript clients etc).
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How to discard all changes made to a branch?
I'm working in a branch (i.e. design ) and I've made a number of changes, but I need to discard them all and reset it to match the repository version. I thought git checkout design would do it, but it just tells me I'm already in branch design and that I have 3 modified files.
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LoaderManager with multiple loaders: how to get the right cursorloader
... mix apples with oranges.
In your case it seems that both the data source and the result treatment are different, which requires you to write the extra boilerplate code to identify the current scenario and dispatch it to the appropriate code block.
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What is Linux’s native GUI API?
Both Windows (Win32 API) and OS X (Cocoa) have their own APIs to handle windows, events and other OS stuff. I have never really got a clear answer as to what Linux’s equivalent is?
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How to provide animation when calling another activity in Android?
I have two Activities A and B. I want to have the shrink Animation when
Activity A calls B and maximize animation when Activity B calls A. I don't need the animation xml files for this.
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Breaking out of nested loops [duplicate]
...ops than throwing an exception? (In Perl, you can give labels to each loop and at least continue an outer loop.)
8 Answer...