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Append an object to a list in R in amortized constant time, O(1)?

...irthday. Some kind readers keep repeating any shortcomings with it, so by all means also see some of the comments below. One suggestion for list types: newlist <- list(oldlist, list(someobj)) In general, R types can make it hard to have one and just one idiom for all types and uses. ...
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What's the difference of “./configure” option “--build”, “--host” and “--target”?

...top so that in the field you could run "gdbclient embedded.device:1234" in order to debug your a.out program. This all applies to compilers too for which you might want to look at the GCC link above or this section about the Canadian cross compile. Also note that, in practice, you might not see bu...
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Can you control how an SVG's stroke-width is drawn?

... You can use CSS to style the order of stroke and fills. That is, stroke first and then fill second, and get the desired effect. MDN on paint-order: https://developer.mozilla.org/en-US/docs/Web/SVG/Attribute/paint-order CSS code: paint-order: stroke; ...
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How to wait in a batch script? [duplicate]

...e on Windows XP, and you have to download the Windows 2003 Resource Kit in order to get it. Chakrit's answer gives you another way to pause, too. Try running sleep 10 from a command prompt. share | ...
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scanf() leaves the new line char in the buffer

...scanf terminology) other than conversions, like the literal text in scanf("order = %d", &order); doesn't skip whitespace either. The literal order has to match the next character to be read. So you probably want " order = %d" there if you want to skip a newline from the previous line but still...
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How to attach javadoc or sources to jars in libs folder?

...ers from Xavier, plastiv, VinceFR and Christopher. Step by step guide In order to link the sources and javadoc to a .jar library that is automatically linked by Eclipse you have to do the following: Place the library .jar file in the libs folder, and the associated source .jar and doc .jar files...
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What is the main difference between PATCH and PUT request?

...ates a new record in database. Example: Use POST method to save new user, order etc where backend server decides the resource id for new resource. PUT In HTTP.PUT method the resource is first identified from the URL and if it exists then it is updated otherwise a new resource is created. When the...
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#define macro for debug printing in C?

.... } while (0) idiom ensures that the code acts like a statement (function call). The unconditional use of the code ensures that the compiler always checks that your debug code is valid — but the optimizer will remove the code when DEBUG is 0. If you want to work with #ifdef DEBUG, then change th...
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C++ SFINAE examples?

... can someone explain what C::* is? I read all the comments and links, but I am still wondering, int C::* means that it is a member pointer of int type. what if a class has no member of int type? What am I missing? and how does test<T>(0) play into this? I must ...
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Which browsers support ?

...them closely on this, and it should come out soon (I hope!). More info on ordered-async (aka, "async=false") can be found here: http://wiki.whatwg.org/wiki/Dynamic_Script_Execution_Order Also, to test if a browser supports the new dynamic async property behavior: http://test.getify.com/test-async/...