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Sorting an array of objects by property values
I've got the following objects using AJAX and stored them in an array:
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Covariance and contravariance real world example
I'm having a little trouble understanding how I would use covariance and contravariance in the real world.
9 Answers
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Multiple lines of input in
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You need to use a textarea to get multiline handling.
<textarea name="Text1" cols="40" rows="5"></textarea>
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How can I reload .emacs after changing it?
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You can use the command load-file (M-x load-file, then press return twice to accept the default filename, which is the current file being edited).
You can also just move the point to the end of any sexp and press C-xC-e to execute just that sex...
How can I check if a scrollbar is visible?
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Note that on Macs the scrollbar floats over the content and disappears when not in use. On Windows it is always visible and takes up horizontal space. Therefor, just because content can be scrolled (which this function detects) does not mean that a scrollbar is necessarily present...
Get class name of django model
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# Get the model name
book._meta.verbose_name
Setting verbose_name and verbose_name_plural is optional. Django will infer these values from the name of the model class (you may have noticed the use of those values in the admin site).
https://docs.djangoproject.com/en/3.0/ref/models/options/...
jQuery trigger file input
...o i tried positioning it outside the viewport by setting position:absolute and top:-100px; and voilà it works.
see http://jsfiddle.net/DSARd/1/
call it a hack.
Hope that works for you.
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Using SQL Server 2008 and SQL Server 2005 and date time
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Open your EDMX in a file editor (or “open with…” in Visual Studio and select XML Editor). At the top you will find the storage model and it has an attribute ProviderManifestToken. This has should have the value 2008. Change that to 2005, recompile and everything works.
NOTE: You'll have to...
Multiline for WPF TextBox
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Enable TextWrapping="Wrap" and AcceptsReturn="True" on your TextBox.
You might also wish to enable AcceptsTab and SpellCheck.IsEnabled too.
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How do I install an R package from source?
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If you have the file locally, then use install.packages() and set the repos=NULL:
install.packages(path_to_file, repos = NULL, type="source")
Where path_to_file would represent the full path and file name:
On Windows it will look something like this: "C:\\RJSONIO_0.2-3.tar.gz...