...k at the implementation of Math.Pow() function. But in .NET Reflector , all I found was this: 4 Answers ...

... How did you use Select2 to allow text input that was not already included in the datasource? – compcentral Apr 30 '13 at 14:42 4 ...

... For example, in your case what is the reverse operation of add_column to call when you rollback? Of course it's remove_column. What is the inverse of create_table? It's drop_table. So in these cases rails know how to rollback and define a down method is superfluous (you can see in the documentation...

... include several fields. In the following operation, find() method returns all documents that match the query. In the result set, only the item and qty fields and, by default, the _id field return in the matching documents. db.inventory.find( { type: 'food' }, { item: 1, qty: 1 } ) In this example ...

I want to ignore all :hover CSS declarations if a user visits our website via touch device. Because the :hover CSS does not make sense, and it can even be disturbing if a tablet triggers it on click/tap because then it might stick until the element loses focus. To be honest, I don't know why tou...

... A database is the main container, it contains the data and log files, and all the schemas within it. You always back up a database, it is a discrete unit on its own. Schemas are like folders within a database, and are mainly used to group logical objects together, which leads to ease of setting pe...

...abbed interface is merely a kind of overflow presentation — one could equally well just show all the form controls in one big page with a scrollbar. It is similarly incorrect to use this attribute to hide content just from one presentation — if something is marked hidden, it is hidden from all p...

...lated classes and functions are not instantiated until they are used, typically in a separate .cpp file (e.g. the program source). When the template is used, the compiler needs the full code for that function to be able to build the correct function with the appropriate type. However, in this case...

...cp's the file. However, what if the metadata do match but files aren't actually the same? Then rsync probably didn't do what you intended. Files that are the same size may still have changed. One simple example is a text file where you correct a typo -- like changing "teh" to "the". The file size i...

Let's say you want to get list of users by calling GET to api/users , but currently the table was truncated so there are no users. What is the proper response for this scenario: 404 or 204 ? ...