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Responsive css background images
... to change the images but I wanna know if there is a more practical way in order to achieve this.
19 Answers
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Setting focus on an HTML input box on page load
...nload="focusOnInput()">
<form name="passwordForm" action="verify.php" method="post">
<input name="passwordInput" type="password" />
</form>
</body>
And then in your JavaScript:
function focusOnInput() {
document.forms["passwordForm"]["passwordInput"]...
How do I automatically sort a has_many relationship in Rails?
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You can specify the sort order for the bare collection with an option on has_many itself:
class Article < ActiveRecord::Base
has_many :comments, :order => 'created_at DESC'
end
class Comment < ActiveRecord::Base
belongs_to :article
...
MySQL Cannot Add Foreign Key Constraint
...ecks=0 before running the DDL so you can create the tables in an arbitrary order rather than needing to create all parent tables before the relevant child tables.
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What is the optimal length for user password salt? [closed]
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Or even better owasp.org/index.php/Password_Storage_Cheat_Sheet
– Boris Treukhov
May 15 '14 at 20:35
add a comment
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A std::map that keep track of the order of insertion?
...ostly what I want, except for that it does not keep track of the insertion order. So when I iterate the the map to print out the values, they are sorted according to the string; but I want them to be sorted according to the order of (first) insertion.
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How to do SELECT COUNT(*) GROUP BY and ORDER BY in Django?
...t
Transaction.objects.all().values('actor').annotate(total=Count('actor')).order_by('total')
values() : specifies which columns are going to be used to "group by"
Django docs:
"When a values() clause is used to constrain the columns that are
returned in the result set, the method for evaluating an...
The SQL OVER() clause - when and why is it useful?
... Partitioning By do?
Why can't I make a query with writing Group By SalesOrderID ?
8 Answers
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UITableView row animation duration and completion callback
...mSelectorOnMainThread:withObject:waitUntilDone:]; in setCompletionBlock in order to call your delegate in next runloop. if you call your delegate directly, without performSelectorOnMainThread, you get old value for tableView.contentSize.
– slamor
Sep 18 '13 at ...
How would Git handle a SHA-1 collision on a blob?
...in the sense that the git object network generates a DAG that is not fully ordered, so while different repositories will agree about what is "earlier" in the case of direct ancestry, if the object came through separate and not directly related branches, two different repos may obviously have gotten ...