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Rails: how do I validate that something is a boolean?
Does rails have a validator like validates_numericality_of for boolean or do I need to roll my own?
5 Answers
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mysql check collation of a table
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The above answer is great, but it doesn't actually provide an example that saves the user from having to look up the syntax:
show table status like 'test';
Where test is the table name.
(Corrected as per comments below.)
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Is there a recommended way to return an image using ASP.NET Web API
...ou showed in the question, you'd need a route that maps the {imageName}, {width} and {height} parameters.
public HttpResponseMessage Get(string imageName, int width, int height)
{
Image img = GetImage(imageName, width, height);
using(MemoryStream ms = new MemoryStream())
{
img.S...
Is there a performance difference between CTE , Sub-Query, Temporary Table or Table Variable?
...elling the SQL engine how to do the work.
As a general rule, it is a good idea to let the SQL engine and SQL optimizer find the best query plan. There are many person-years of effort that go into developing a SQL engine, so let the engineers do what they know how to do.
Of course, there are situa...
What is the difference between an Azure Web Site and an Azure Web Role
... answered Jun 8 '12 at 0:06
David MakogonDavid Makogon
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Significance of bool IsReusable in http handler interface
...s many of these handlers as are need to handle the current load.
The downside is that if the number of instances needed is larger than the instances currently present, they cause more memory to be used. Conversely they can also reduce apparent memory uses since their instance value will survive GC...
When to create a new app (with startapp) in Django?
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James Bennett has a wonderful set of slides on how to organize reusable apps in Django.
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How do I make this file.sh executable via double click?
...ick on the .command file and open the infos. There you have the option to hide the suffix (under name & suffix).
– Bijan
Dec 11 '13 at 15:40
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android ellipsize multiline textview
...t is a subclass of TextView that actually works for ellipsizing. The android-textview-multiline-ellipse code listed in an earlier answer I have found to be buggy in certain circumstances, as well as being under GPL, which doesn't really work for most of us. Feel free to use this code freely and wi...
How do I move a file with Ruby?
... File rename won't work across partitions, and throws the error "Invalid cross-device link". FileUtils is a better choice in those cases, but for a simple move in the same partition, rename works.
– d3vkit
Jan 25 '13 at 4:06
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