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Showing line numbers in IPython/Jupyter Notebooks

...o create one. Open it in a text editor and add this code: define([ 'base/js/namespace', 'base/js/events' ], function(IPython, events) { events.on("app_initialized.NotebookApp", function () { IPython.Cell.options_default.cm_config.lineNumbers = t...
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Creation timestamp and last update timestamp with Hibernate and MySQL

... exclusive behaviours to your entities (and you can't extend more than one base class). afaik the only way to obtain the same effect without a base class is though aspectj itd or event listeners see @kieren dixon answer – gpilotino Feb 2 '12 at 0:49 ...
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Mean per group in a data.frame [duplicate]

... I describe two ways to do this, one based on data.table and the other based on reshape2 package . The data.table way already has an answer, but I have tried to make it cleaner and more detailed. The data is like this: d <- structure(list(Name = structure...
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Where is the WPF Numeric UpDown control?

... } #endregion public override void OnApplyTemplate() { base.OnApplyTemplate(); _UpButton = Template.FindName("Part_UpButton", this) as RepeatButton; _DownButton = Template.FindName("Part_DownButton", this) as RepeatButton; _UpButton.Click += _UpButton_Clic...
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How unique is UUID?

...(I'm using it for files uploaded to the server)? As I understand it, it is based off random numbers. However, it seems to me that given enough time, it would eventually repeat it self, just by pure chance. Is there a better system or a pattern of some type to alleviate this issue? ...
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A type for Date only in C# - why is there no Date type?

...want to make explicit that certain variables and method-arguments are date-based . Hence I can't use the DateTime.Date property ...
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Why use 'virtual' for class properties in Entity Framework model definitions?

..., which is why it requires certain properties to be marked virtual in your base class POCOs. It literally creates new types that derive from your POCO types. So your POCO is acting as a base type for the Entity Framework's dynamically created subclasses. That's what I meant by "create a proxy around...
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How do I parse a URL query parameters, in Javascript? [duplicate]

...s not that simple, see the peer-review in the comments, especially: hash based routing (@cmfolio) array parameters (@user2368055) proper use of decodeURIComponent and non-encoded = (@AndrewF) non-encoded + (added by me) For further details, see MDN article and RFC 3986. Maybe this should go to ...
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Getting the count of unique values in a column in bash

...t column * Sort the values by the number of occurrences * Secondary sort based on the value (for example b vs g vs m vs z) * Iterate through the result hash, using the sorted list * Print the value and number of each occurrence Results based on the sample input files provided by @Dennis colu...
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Animation CSS3: display + opacity

... Based on Michaels answer this is the actual CSS code to use .parent:hover .child { display: block; -webkit-animation: fadeInFromNone 0.5s ease-out; -moz-animation: fadeInFromNone 0.5s ease-out; -o-animation:...