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Detecting when the 'back' button is pressed on a navbar
...navigationItem.leftBarButtonItem = backButton
}
// Then handle the button selection
func goBack() {
// Here we just remove the back button, you could also disabled it or better yet show an activityIndicator
self.navigationItem.leftBarButtonItem = nil
someData.saveInBackground { (success...
Best Practice: Access form elements by HTML id or name attribute?
... restrictions on the value of the name attribute, so e.g. you can have <select name="a+b"> or <input type="text" name="...2">, which can't be referenced using javascript .propertyName notation). Explicit [] notation also allows names built from expressions, e.g. myCheckBox = document.ge...
Epoch vs Iteration when training neural networks
...ining instances into subsets (i.e., batches), performing one pass over the selected subset (i.e., batch), and then optimizing the network through backpropagation. The number o
Do I need elements in persistence.xml?
...in Eclipse (Kepler tested):
Right click on the project, click Properties, select JPA, in the Persistence class management tick Discover annotated classes automatically.
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File upload progress bar with jQuery
.../blueimp/jQuery-File-Upload.
They have a very nice api with multiple file selection, drag&drop support, progress bar, validation and preview images, cross-domain support, chunked and resumable file uploads. And they have sample scripts for multiple server languages(node, php, python and go).
D...
How can I troubleshoot my Perl CGI script?
...rather than being buffered.
You have to set this for each filehandle. Use select to
change the default filehandle, like so:
$|++; #sets $| for STDOUT
$old_handle = select( STDERR ); #change to STDERR
$|++; #sets $| for STDERR
select( $old_hand...
import module from string variable
...ich I hope will automate document generation from future MPL releases.
I selected interested submodules/packages and want to list their main classes from which I'll generate list and process it with pydoc
...
The smallest difference between 2 Angles
...
a one line simple solution and solved for me(not the selected answer ;) ). but tan inverse is a costly process.
– Mohan Kumar
Jun 20 '16 at 16:32
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CSS text-overflow in a table cell?
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It messes up the selected width limits of every column, e.g. if you have some columns defined for max-width: X they now can be wider -- I thought this is because of display: flex being used, but I removed that and see no difference...
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The differences between .build, .create, and .create! and when should they be used?
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I'm selected this one as the most correct answer because of the mention on being able to link the associated models with them - that's an interesting and important difference I think over using .new and .save. Which takes a littl...