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How do I bind a WPF DataGrid to a variable number of columns?
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answered Dec 7 '10 at 18:01
Fredrik HedbladFredrik Hedblad
77.6k2121 gold badges243243 silver badges260260 bronze badges
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ORDER BY the IN value list
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With Postgres 9.4 this can be done a bit shorter:
select c.*
from comments c
join (
select *
from unnest(array[43,47,42]) with ordinality
) as x (id, ordering) on c.id = x.id
order by x.ordering;
Or a bit more compact without a derived table:
select c.*
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How do I convert a String object into a Hash object?
...ere security implications.
It executes whatever it is passed, you must be 110% sure (as in, at least no user input anywhere along the way) it would contain only properly formed hashes or unexpected bugs/horrible creatures from outer space might start popping up.
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What is the difference between sigaction and signal?
...turns.
The signal() function (usually) resets the signal action back to SIG_DFL (default) for almost all signals. This means that the signal() handler must reinstall itself as its first action. It also opens up a window of vulnerability between the time when the signal is detected and the handler ...
Does SQLAlchemy have an equivalent of Django's get_or_create?
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100
That's basically the way to do it, there is no shortcut readily available AFAIK.
You could ge...
Programmatically trigger “select file” dialog box
...there is an alternative solution that does not require javascript. It is a bit of a hack, exploiting the fact that clicking on a label sets the focus on the associated input.
You need a <label> with a proper for attribute (points to the input), optionnaly styled like a button (with bootstrap,...
Use ASP.NET MVC validation with jquery ajax?
...or client side validation
Resources
http://msdn.microsoft.com/en-us/vs2010trainingcourse_aspnetmvccustomvalidation_topic5.aspx
Server Side
NOTE: This is only for additional server side validation on top of jQuery.validation library
Perhaps something like this could help:
[ValidateAjax]
publi...
What is difference between functional and imperative programming languages?
...s).
Summary: In imperative languages you tell the computer how to change bits, bytes and words in it's memory and in what order. In functional ones, we tell the computer what things, actions etc. are. For example, we say that the factorial of 0 is 1, and the factorial of every other natural number...
How to run a PowerShell script from a batch file
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edited Mar 10 '16 at 21:17
Peter Mortensen
26.5k2121 gold badges9292 silver badges122122 bronze badges
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How do I declare an array of weak references in Swift?
...Type>.weakObjects()
NSHashTable Class Reference
Available in OS X v10.5 and later.
Available in iOS 6.0 and later.
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