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SQL join: selecting the last records in a one-to-many relationship
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When Id is a uniqueidentifier (guid), this cannot be used.
– andrew.fox
Jul 2 at 11:46
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show 2 ...
if A vs if A is not None:
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Most guides I've seen suggest that you should use
if A:
unless you have a reason to be more specific.
There are some slight differences. There are values other than None that return False, for example empty lists, or 0, s...
It is more efficient to use if-return-return or if-else-return?
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From Chromium's style guide:
Don't use else after return:
# Bad
if (foo)
return 1
else
return 2
# Good
if (foo)
return 1
return 2
return 1 if foo else 2
share
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What does the exclamation mark do before the function?
...good point for using ! for function invocation marked on airbnb JavaScript guide
Generally idea for using this technique on separate files (aka modules) which later get concatenated. The caveat here is that files supposed to be concatenated by tools which put the new file at the new line (which is ...
Empty arrays seem to equal true and false at the same time
...value of toString().
To quote David Flanagan's JavaScript: The Definitive Guide, which, by the way, is a superb book that should be everyone's first place to get answers to these types of questions:
The details of this object-to-number conversion explain why an empty array converts to the numbe...
How to extract one column of a csv file
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You could use GNU Awk, see this article of the user guide.
As an improvement to the solution presented in the article (in June 2015), the following gawk command allows double quotes inside double quoted fields; a double quote is marked by two consecutive double quotes ("") the...
Why is char[] preferred over String for passwords?
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To quote an official document, the Java Cryptography Architecture guide says this about char[] vs. String passwords (about password-based encryption, but this is more generally about passwords of course):
It would seem logical to collect and store the password in an object
of type jav...
Can an ASP.NET MVC controller return an Image?
...s();
return codecs.First(codec => codec.FormatID == imageFormat.Guid).MimeType;
}
}
public ActionResult Index()
{
return new ImageResult { Image = image, ImageFormat = ImageFormat.Jpeg };
}
<%=Html.Image<CapchaController>(c => c.Index(), 120, 30, "Current tim...
Does Swift have access modifiers?
...r other metaprogramming stuff in Swift? I took a look through the language guide on iBooks but I'm not seeing it.
– Dave Kapp
Jun 6 '14 at 21:23
1
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MetadataException: Unable to load the specified metadata resource
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Awesome guide. For me, I'd copied another connection string which used res://*/Database.MyModel2..., when I REALLY wanted res://*/MyModel1... (Database is a folder inside my Integration Tests project)
– emragin...