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The differences between .build, .create, and .create! and when should they be used?
...te alternative can be useful in controllers where respond_with is used for API (JSON/XML) responses. In this case the existence of errors on the object will cause the errors to be returned in the response with a status of unprocessable_entity, which is exactly what you want from an API.
I would alw...
Android: Temporarily disable orientation changes in an Activity
... to ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE it will flip upside down. In API 9, ActivityInfo introduces SCREEN_ORIENTATION_REVERSE_LANDSCAPE constant, but I don't see a way to detect such orientation through Configuration class.
– Błażej Czapp
Apr 20 '12 at...
How to select rows from a DataFrame based on column values?
...sitional indexing (df.iloc[...])
Label indexing (df.xs(...))
df.query(...) API
Below I show you examples of each, with advice when to use certain techniques. Assume our criterion is column 'A' == 'foo'
(Note on performance: For each base type, we can keep things simple by using the pandas API or ...
How to take screenshot of a div with JavaScript?
...t();
endif;?>
<script type='text/javascript' src='http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js?ver=1.7.2'></script>
<canvas id="canvas" width="300" height="150"></canvas>
<button id="btn">Save</button>
<script>
$(document).ready(fu...
How to force an entire layout View refresh?
...wer the question: Use invalidate():
public void invalidate ()
Since: API Level 1
Invalidate the whole view. If the view is visible, onDraw(Canvas) will be called at some point in the future. This must be called from a UI thread. To call from a non-UI thread, call postInvalidate().
ViewG...
Why does the month argument range from 0 to 11 in JavaScript's Date constructor?
...
In short, it took 18 years for Java to get a correctly designed date/time API built-in, but JavaScript is still stuck back in the dark ages. We do indeed have excellent libraries like Moment.js, date-fns, and js-joda. But as of now, there is nothing more than Date built-in to the language. Hopef...
Fragment MyFragment not attached to Activity
.../reference/android/app/… ...there's also isDetached(), that was added on API level 13
– Lucas Jota
Mar 21 '14 at 12:42
...
What is the difference between SqlCommand.CommandTimeout and SqlConnection.ConnectionTimeout?
...nd Object commands.
https://docs.microsoft.com/en-us/sql/ado/reference/ado-api/commandtimeout-property-ado?view=sql-server-ver15
https://docs.microsoft.com/en-us/sql/ado/reference/ado-api/connectiontimeout-property-ado?view=sql-server-ver15
...
Does Internet Explorer 8 support HTML 5?
...
IE8 beta 2 supports two APIs from HTML5: cross-document messaging and non-SQL storage.
IE8 beta 2 doesn’t implement the HTML5 parsing algorithm or the new elements (no <canvas> or <video> support).
There are also bug fixes that align...
Suppress command line output
... file system folder. User code can brows this internal name space using an API layer below the usual Win32 API; a good tool to explore the kernel namespace is WinObj from the SysInternals group at Microsoft.
For a complete description of the rules surrounding legal names of files (and devices) in W...