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Validation of radio button group using jQuery validation plugin
How to perform validation for a radio button group (one radio button should be selected) using jQuery validation plugin?
8 ...
How to remove item from list in C#?
... use.
RemoveAt(int index) can be used if you know the index of the item. For example:
resultlist.RemoveAt(1);
Or you can use Remove(T item):
var itemToRemove = resultlist.Single(r => r.Id == 2);
resultList.Remove(itemToRemove);
When you are not sure the item really exists you can use Sing...
Foreign key constraint may cause cycles or multiple cascade paths?
... couldn't implicitly figure out on it's own eg if there are multiple paths for a delete referential action then your trigger code will define which tables are deleted and in which order.
– onedaywhen
Aug 5 '14 at 15:22
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JPA - Returning an auto generated id after persist()
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Is there a performance penalty (or any other negative effects) of manually flushing after persisting?
– Craig Otis
Apr 29 '16 at 12:09
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How can I remove or replace SVG content?
...gt;
This removed all charts.
d3.select("svg").remove();
This worked for removing the existing bar chart, but then I couldn't re-add the bar chart after
d3.select("#barChart").remove();
Tried this. It not only let me remove the existing bar chart, but also let me re-add a new bar chart.
d...
How to determine if a record is just created or updated in after_save
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I was looking to use this for an after_save callback.
A simpler solution is to use id_changed? (since it won't change on update) or even created_at_changed? if timestamp columns are present.
Update: As @mitsy points out, if this check is needed outs...
Angular ng-repeat Error “Duplicates in a repeater are not allowed.”
... they are caching previously found DOM elements based on their key as a performance optimization. Since they need unique keys they explicitly throw this error when they find duplicate keys on line 15417
– devshorts
Jul 19 '13 at 21:01
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Can vim monitor realtime changes to a file
...so that vim reads the file when it changes. However (depending on your platform), you have to give it focus.
From the help:
When a file has been detected to have
been changed outside of Vim and it
has not been changed inside of Vim,
automatically read it again. When the
file has been...
Proper way to return JSON using node or Express
...hat response is a string too, if you want to send the response prettified, for some awkward reason, you could use something like JSON.stringify(anObject, null, 3)
It's important that you set the Content-Type header to application/json, too.
var http = require('http');
var app = http.createServer(fu...
Why do I get a “Null value was assigned to a property of primitive type setter of” error message whe
...r you'll be using a primitive data type or non primitive wrapper data type for declaring the field.
@Column(name = "AGE")
private int age;
or
@Column(name = "AGE")
private INTEGER age;
you'll have to declare the field as non primitive wrapper data type because the container will try to map th...