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Using the HTML5 “required” attribute for a group of checkboxes?
...
Unfortunately HTML5 does not provide an out-of-the-box way to do that.
However, using jQuery, you can easily control if a checkbox group has at least one checked element.
Consider the following DOM snippet:
<div class="checkbox-group required">
...
Add a column to a table, if it does not already exist
...bjects.
IF NOT EXISTS (
SELECT *
FROM sys.columns
WHERE object_id = OBJECT_ID(N'[dbo].[Person]')
AND name = 'ColumnName'
)
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improve this answer
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How to perform a real time search and filter on a HTML table
...ce(/\s+/g, ' ').toLowerCase();
return !~text.indexOf(val);
}).hide();
});
Demo: http://jsfiddle.net/7BUmG/2/
Regular expression search
More advanced functionality using regular expressions will allow you to search words in any order in the row. It will work the same if you type apple...
how to permit an array with strong parameters
...ssociations which is not, as I remake it as a Rails 4 app, letting me save ids from the associated model in the Rails 4 version.
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Convert a series of parent-child relationships into a hierarchical tree?
...];
}
}
unset($flat);
That's all for getting the hierarchy into a multidimensional array:
Array
(
[children] => Array
(
[0] => Array
(
[children] => Array
(
[0] => Array
...
“is” operator behaves unexpectedly with integers
...ke a look at this:
>>> a = 256
>>> b = 256
>>> id(a)
9987148
>>> id(b)
9987148
>>> a = 257
>>> b = 257
>>> id(a)
11662816
>>> id(b)
11662828
Here's what I found in the Python 2 documentation, "Plain Integer Objects" (It's the...
When to use Comparable and Comparator
.../2627608 There is Version class that uses ComparableVersion. Version - provides with factory methods ComparableVersion supposed to be object (with no static methods) - provides an version that is able to be compare with another one. Responsibilities are separated.
– ses
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PostgreSQL query to return results as a comma separated list
Let say you have a SELECT id from table query (the real case is a complex query) that does return you several results.
5 ...
How to get thread id from a thread pool?
....currentThread():
private class MyTask implements Runnable {
public void run() {
long threadId = Thread.currentThread().getId();
logger.debug("Thread # " + threadId + " is doing this task");
}
}
sha...
How to delete duplicate rows in SQL Server?
How can I delete duplicate rows where no unique row id exists?
23 Answers
23
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