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What is the difference between visibility:hidden and display:none?

...ts so rowdy that security plucks them from the line. Everyone in line will then move forward one position to fill the now empty slot. This is like display:none. Contrast this with the similar situation, but that someone in front of you puts on an invisibility cloak. While viewing the line, it will ...
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Smallest data URI image possible for a transparent image

...u use the tiniest transparent GIF possible, it works fine, however, if you then want your transparent GIF to have a background-image, then this is impossible. For some reason, some GIFs such as the following prevent CSS backgrounds (in some browsers). Shorter (but unstable - 74 bytes) data:image/...
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php execute a background process

...a server-side script in whatever language (php/bash/perl/etc) is handy and then call it from the process control functions in your php script. The function probably detects if standard io is used as the output stream and if it is then that will set the return value..if not then it ends proc_close...
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How to get object size in memory? [duplicate]

...llocated to whatever sizes the framework designers decided to go with, and then increased when needed. By default it's probably something like 10 elements. So you won't notice any size difference until you add enough elements to require more memory to be allocated. – Michael Yo...
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How to find elements with 'value=x'?

...the value is hardcoded in the source of the page using the value attribute then you can $('#attached_docs :input[value="123"]').remove(); If you want to target elements that have a value of 123, which was set by the user or programmatically then use EDIT works both ways .. or $('#attached_docs...
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No == operator found while comparing structs in C++

...e to compare: auto tie() const { return std::tie(my_struct1, an_int); } Then the comparisons above simplify to: inline bool operator==(const MyStruct1& lhs, const MyStruct1& rhs) { return lhs.tie() == rhs.tie(); } If you want a fuller set of comparison operators, I suggest boost op...
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JUnit test for System.out.println()

...t uses System.out.println() by passing a PrintStream as a collaborator and then using System.out in production and a Test Spy in the test. That is, use Dependency Injection to eliminate the direct use of the standard output stream. In Production ConsoleWriter writer = new ConsoleWriter(System.ou...
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MyISAM versus InnoDB [closed]

... write a few simple scripts to simulate the load with each storage engine, then compare the results. share | improve this answer | follow | ...
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Accessing members of items in a JSONArray with Java

...inple getInt like how we get the value of a hashmap by specifying the key, then why do we have to iterate with a for loop? Doesn't iteration with the loop make the id get assigned to int id multiple times? – Nav Jun 28 '16 at 10:04 ...
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How to split a string in Java

...tead. If you'd like to retain the split character in the resulting parts, then make use of positive lookaround. In case you want to have the split character to end up in left hand side, use positive lookbehind by prefixing ?<= group on the pattern. String string = "004-034556"; String[] parts =...