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Using Chrome, how to find to which events are bound to an element
...anel. Use a Mouse -> click breakpoint and then "step into next function call" while keeping an eye on the call stack to see what userland function handles the event. Ideally, you'd replace the minified version of jQuery with an unminified one so that you don't have to step in all the time, and us...
Run a callback only if an attribute has changed in Rails
...omething
# ...
end
end
This utilizes the fact that the before_save callback can conditionally execute based on the return value of a method call. The status_id_changed? method comes from ActiveModel::Dirty, which allows us to check if a specific attribute has changed by simply appending _cha...
ASP.NET MVC Yes/No Radio Buttons with Strongly Bound Model MVC
... fieldset, what the radio buttons are for as a whole can not be programmatically determined.
Model
public class MyModel
{
public bool IsMarried { get; set; }
}
View
<fieldset>
<legend>Married</legend>
@Html.RadioButtonFor(e => e.IsMarried, true, new { id = "mar...
Primary key/foreign Key naming convention [closed]
...regarding the naming convention for Primary and Foreign Keys. There's basically two schools of thought in our group:
13 An...
How do you beta test an iphone app?
...
In year 2011, there's a new service out called "Test Flight", and it addresses this issue directly.
Apple has since bought TestFlight in 2014 and has integrated it into iTunes Connect and App Store Connect.
...
querySelector search immediate children
... not, they temporarily add an ID, then create a full selector string.
Basically you'd do:
var sel = '> someselector';
var hadId = true;
if( !elem.id ) {
hadID = false;
elem.id = 'some_unique_value';
}
sel = '#' + elem.id + sel;
var result = document.querySelectorAll( sel );
if( !hadI...
How to terminate a python subprocess launched with shell=True
...n. If your cmd happens to be a shell script wrapper for something else, do call the final binary there with exec too in order to have only one subprocess.
– Nicolinux
Aug 4 '16 at 17:51
...
Distributed sequence number generation?
...que IDs that are (optionally) loosely sortable by a specific criteria (typically generation time). True sequence numbers imply knowledge of what all other workers have done, and as such require shared state. There is no easy way of doing this in a distributed, high-scale manner. You could look into ...
Liquibase lock - reasons?
...
There is a built-in command in Liquibase called releaseLocks that would execute what @Adrian Ber answered but I think it is database agnostic.
– user1434769
Oct 26 '15 at 11:17
...
Send JSON data via POST (ajax) and receive json response from Controller (MVC)
...ible for parsing the data in the correct way and send the data back to the caller (webapp). The caller could also be something like fiddler, or postman, or maybe another app.. Hope this makes sense..
– Dieterg
Jul 10 '14 at 9:19
...