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

...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 look like there is an empty space, but peop...
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How to reduce iOS AVPlayer start delay

... any given time have a maximum of 2 AVPlayers loaded. Of course I don't know whether the switching can be done so smoothly that it does not disturb playback. (Would have added this as a comment if I could.) Best, Peter ...
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Checking if form has been submitted - PHP

... Ideally now you should use if (null !== (filter_input(INPUT_POST, 'macaddress'))){ which gets you in the habit of using filter_input – depicus Feb 20 '15 at 9:46 ...
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How can I select and upload multiple files with HTML and PHP, using HTTP POST?

...t explained the PHP part. Over time, this became a popular answer, so I've now expanded to cover both HTML and PHP. – Mark E. Haase Mar 7 '15 at 17:26  |  ...
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Image resizing client-side with JavaScript before upload to the server

...de with JavaScript (really resize, not just change width and height). I know it's possible to do it in Flash but I would like to avoid it if possible. ...
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Convert String to Float in Swift

... Swift 2.0+ Now with Swift 2.0 you can just use Float(Wage.text) which returns a Float? type. More clear than the below solution which just returns 0. If you want a 0 value for an invalid Float for some reason you can use Float(Wage.tex...
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Assert a function/method was not called using Mock

...led attribute, but if your assertion fails, the next thing you'll want to know is something about the unexpected call, so you may as well arrange for that information to be displayed from the start. Using unittest, you can check the contents of call_args_list instead: self.assertItemsEqual(my_var.c...
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What do the return values of node.js process.memoryUsage() stand for?

...dicated to storing reference types like objects, strings and closures. Now it is easy to answer the question: rss: Resident Set Size heapTotal: Total Size of the Heap heapUsed: Heap actually Used Ref: http://apmblog.dynatrace.com/2015/11/04/understanding-garbage-collection-and-hunting-memory...
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How Should I Declare Foreign Key Relationships Using Code First Entity Framework (4.1) in MVC3?

...t model. Everything works via MVC which is great (kudos to Microsoft!) but now I want it NOT to work because I need to have data model constraints. ...
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Saving timestamp in mysql table using php

...;field> bigint unsigned If you are using the current time you can use now() or current_timestamp. share | improve this answer | follow | ...