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What is the difference between “px”, “dip”, “dp” and “sp”?

...illimeters - based on the physical size of the screen. pt Points - 1/72 of an inch based on the physical size of the screen. dp or dip Density-independent Pixels - an abstract unit that is based on the physical density of the screen. These units are relative to a 160 dpi screen, so...
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How to get maximum value from the Collection (for example ArrayList)?

...ng Comparator.comparing: Code: List<Integer> ints = Stream.of(12, 72, 54, 83, 51).collect(Collectors.toList()); System.out.println("the list: "); ints.forEach((i) -> { System.out.print(i + " "); }); System.out.println(""); Integer minNumber = ints.stream() .min(Comparator.com...
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Paperclip::Errors::MissingRequiredValidatorError with Rails 4

... Paperclip will also throw "Missing Required Validator Error" in case of PDF file upload. The workaround for that is: First install the "GhostScript" and then add "application/pdf" to content-type. – HackerKarma Mar 10 '14 at 15:41 ...
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C# vs C - Big performance difference

...mance. Once you perform the correct optimizations in the compiler, I get .72 seconds for the C++ application and 1.16 seconds for the C# application (both in release build). Since the C# application is very basic and allocates the memory used in the loop on the stack and not on the heap, it is actu...
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How do I upload a file with metadata using a REST web service?

...8029299 Content-Disposition: form-data; name="name"; filename="myfilename.pdf" Content-Type: application/octet-stream %PDF-1.4 % 2 0 obj <</Length 57/Filter/FlateDecode>>stream x+r 26S00SI2P0Qn F !i\ )%!Y0i@.k [ endstream endobj 4 0 obj <</Type/Page/MediaBox[0 0 595 842]/Resourc...
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Why do we need virtual functions in C++?

...main() -> int { Number const a( 3.14 ); Number const b( 2.72 ); Number const c( 1.0 ); Sum const sum_ab( &a, &b ); Sum const sum( &sum_ab, &c ); cout << sum.value() << endl; } In the line commented as “bad” the Expre...
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How can I undo git reset --hard HEAD~1?

...w of dangling commits with fsck: $ git fsck --lost-found dangling commit b72e67a9bb3f1fc1b64528bcce031af4f0d6fcbf Recover the dangling commit with rebase: $ git rebase b72e67a9bb3f1fc1b64528bcce031af4f0d6fcbf share ...
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How to paste in a new line with vim?

... 72 Shortly after :help p it says: :[line]pu[t] [x] Put the text [from register x] after [line]...
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Alternate table row color using CSS?

...swered Mar 21 '14 at 19:33 bmich72bmich72 52044 silver badges55 bronze badges ...