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What's an elegant way to conditionally add a class to an HTML element in a view?
... you can use Rail's record tag helpers such as div_for, which will automagically set your ID and class based on the record you give it. Given a Person with id 47:
# <div id="person_47" class="person good">
<% div_for @person, class: (@success ? 'good' : 'bad') do %>
<% end %>
...
Height of status bar in Android [duplicate]
...
Instead of hard coding it, better to calculate dynamically. The above method worked for me!
– alchemist
Jul 5 '13 at 7:20
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Where to put model data and behaviour? [tl; dr; Use Services]
... getter/setters). I'm not advocating doing this for every service systematically.
EDIT:
I used to think this pattern would go against the "Angular model is plain old javascript object" mantra, but it seems to me now that this pattern is perfectly fine.
EDIT (2):
To be even clearer, I use a Model...
Does it make sense to do “try-finally” without “catch”?
...ppropriately. Below is a concrete example of handling the exception from a calling method.
public void yourOtherMethod() {
try {
yourMethod();
} catch (YourException ex) {
// handle exception
}
}
public void yourMethod() throws YourException {
try {
db.s...
Generating an Excel file in ASP.NET [closed]
...within your Excel Workbook, you can do something similar via an XML schema called SpreadSheetML. This is not the new format that shipped with Office 2007, but something completely different that works as far back as Excel 2000. The easiest way to explain how it works is with an example:
<?xml ...
Safari 3rd party cookie iframe trick no longer working?
...hat does not require user interaction.
As I stated in a post I made:
Basically all you need to do is load your page on top.location, create the session and redirect it back to facebook.
Add this code in the top of your index.php and set $page_url to your application final tab/app URL and you’ll...
Why are ToLookup and GroupBy different?
...d I ever bother with GroupBy? Why should it exist?
What happens when you call ToLookup on an object representing a remote database table with a billion rows in it?
The billion rows are sent over the wire, and you build the lookup table locally.
What happens when you call GroupBy on such an objec...
Real world use of JMS/message queues? [closed]
... In our days, instead of using JMS spec, we can use asynchronous method calls. For more info see: docs.oracle.com/javaee/6/tutorial/doc/gkkqg.html
– geo
Mar 13 '18 at 8:56
3
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How to prevent form from being submitted?
...n't be executed and the form will be submitted either way. You should also call preventDefault to prevent the default form action for Ajax form submissions.
function mySubmitFunction(e) {
e.preventDefault();
someBug();
return false;
}
In this case, even with the bug the form won't submit!
...
Why isn't vector a STL container?
...e-optimization reasons, the C++ standard (as far back as C++98) explicitly calls out vector<bool> as a special standard container where each bool uses only one bit of space rather than one byte as a normal bool would (implementing a kind of "dynamic bitset"). In exchange for this optimization ...