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How to pass prepareForSegue: an object
...ntifier:sender: method to activate the transition to a new view based on a selection or button press.
For instance, consider I had two view controllers. The first contains three buttons and the second needs to know which of those buttons has been pressed before the transition. You could wire t...
Laravel Eloquent Sum of relation's column
...([
'activity AS paid_sum' => function ($query) {
$query->select(DB::raw("SUM(amount_total) as paidsum"))->where('status', 'paid');
}
]);
it returns
"paid_sum_count" => "320.00"
in Deals attribute.
This it now the sum which i wanted to get not the count.
...
Django-Admin: CharField as TextArea
...
is there any downside in this compared to the selected answer? this looks cleaner to implement as we don't need to create a new ModelForm...
– Filipe Pina
Feb 23 '12 at 10:30
...
What is an index in SQL?
...e file the value is stored.
In MySQL you can use EXPLAIN in front of your SELECT statement to see if your query will make use of any index. This is a good start for troubleshooting performance problems. Read more here:
http://dev.mysql.com/doc/refman/5.0/en/explain.html
...
How to use sed to replace only the first occurrence in a file?
... then only looked for starting on the next line. Therefore, both lines are selected in this case, and the s/foo/bar/ substitution is performed on both of them.
sed '1,/foo/ s//bar/' <<<$'1foo\n2foo\n3foo' fails: with sed: first RE may not be empty (BSD/macOS) and sed: -e expression #1, char...
Is optimisation level -O3 dangerous in g++?
...er versions of GCC have a profile-guided optimization mode that can (IIUC) selectively apply the -O3 optimizations to hot functions -- effectively automating this process.
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Cannot open include file 'afxres.h' in VC2010 Express
...++.
Start
Change or remove program (type)
Microsoft Visual Studio
Modify
Select 'Microsoft Foundation Classes for C++'
Update
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follow
...
Difference between $(document.body) and $('body')
...ctly to jQuery. Alternatively, when you pass the string 'body', the jQuery selector engine has to interpret the string to figure out what element(s) it refers to.
In practice either will get the job done.
If you are interested, there is more information in the documentation for the jQuery function...
Parser for C#
...2 also shows how you can then use the information gathered from the AST to select on the source code a type, method, comment, etc..
For reference here is the API code that wrote (note that this is my first pass at using SharpDevelop's C# AST parser, and I am still getting my head around how it work...
How do I sort strings alphabetically while accounting for value when a string is numeric?
..." };
var size = from x in sizes
orderby x.Length, x
select x;
foreach (var p in size)
{
Console.WriteLine(p);
}
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