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Java Date vs Calendar

... as java.util.Date, java.util.Calendar, and java.text.SimpleDateFormat are now legacy, supplanted by the java.time classes built into Java 8 and later. See Tutorial by Oracle. – Basil Bourque Oct 19 '18 at 19:51 ...
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UITableView : viewForHeaderInSection: not called during reloadData:

...eader won't be called. That's because without a height, the runtime won't know how to resize the view, so it doesn't bother to ask for one. share | improve this answer | foll...
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Websocket API to replace REST API?

... Backbone.js (using Rails): http://blog.pusher.com/2011/6/21/backbone-js-now-realtime-with-pusher Build application with backbone.js on the client and node.js with express, socket.io, dnode on the server. http://andyet.net/blog/2011/feb/15/re-using-backbonejs-models-on-the-server-with-node/ ht...
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When can I use a forward declaration?

...he compiler's position: when you forward declare a type, all the compiler knows is that this type exists; it knows nothing about its size, members, or methods. This is why it's called an incomplete type. Therefore, you cannot use the type to declare a member, or a base class, since the compiler woul...
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MySQL SELECT only not null values

...uld use IS NOT NULL. (The comparison operators = and <> both give UNKNOWN with NULL on either side of the expression.) SELECT * FROM table WHERE YourColumn IS NOT NULL; Just for completeness I'll mention that in MySQL you can also negate the null safe equality operator but this is not sta...
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How to compare two revisions in Bitbucket?

... Bitbucket supports comparing tags now. https://bitbucket.org/<OWNER>/<PROJECT>/branches/compare/<tag1>%0D<tag2> share | improve thi...
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How to detect responsive breakpoints of Twitter Bootstrap 3 using JavaScript?

... Edit: This library is now available through Bower and NPM. See github repo for details. UPDATED ANSWER: Live example: CodePen Latest version: Github repository Don't like Bootstrap? Check: Foundation demo and Custom framework demos Have a probl...
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How do I use 'git reset --hard HEAD' to revert to a previous commit? [duplicate]

I know that Git tracks changes I make to my application, and it holds on to them until I commit the changes, but here's where I'm hung up: ...
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Reducing MongoDB database file size

...atabase(). In either case you need the space somewhere to copy the files. Now I don't know why you don't have enough space to perform a compress, however, you do have some options if you have another computer with more space. Export the database to another computer with Mongo installed (using mon...
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how to listen to N channels? (dynamic select statement)

...tement, it blocks until at least one of the cases can proceed, makes a uniform pseudo-random choice, and then executes that case. It returns the index of the chosen case and, if that case was a receive operation, the value received and a boolean indicating whether the value corresponds to a ...