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Is it better to call ToList() or ToArray() in LINQ queries?
...the case where I want to eval a query right where I declare it. This is usually because I need to iterate over it multiple times and it is expensive to compute. For example:
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Random data in Unit Tests?
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There's a compromise. Your coworker is actually onto something, but I think he's doing it wrong. I'm not sure that totally random testing is very useful, but it's certainly not invalid.
A program (or unit) specification is a hypothesis that there exists some program ...
Unnecessary curly braces in C++?
...it can also be handy to have resources (files, mutexes, whatever) automatically released as the scope exits, which can make things cleaner. This means you can hold on to some shared resource for a shorter duration than you would if you grabbed it at the start of the method.
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Rails 4: List of available datatypes
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Here are all the Rails 4 (ActiveRecord migration) datatypes:
:binary
:boolean
:date
:datetime
:decimal
:float
:integer
:bigint
:primary_key
:references
:string
:text
:time
:timestamp
Source: http://api.rubyonrails.org/classes/Acti...
Work on a remote project with Eclipse via SSH
...y what you want.
RSE may already be included in your current Eclipse installation. To check in Eclipse Indigo go to Window > Open Perspective > Other... and choose Remote System Explorer from the Open Perspective dialog to open the RSE perspective.
To create an SSH remote project from the R...
Android Fragment onClick button Method
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I do this all the time, but still think it's ugly
– Alexander Farber
Jun 30 '15 at 15:25
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Android Facebook integration with invalid key hash
...eason. I have also got the same problem. So I tried it through programmatically.
Follow these steps:
Paste the following code in oncreate().
try {
PackageInfo info = getPackageManager().getPackageInfo(
"com.example.packagename",
PackageMan...
Good examples of Not a Functor/Functor/Applicative/Monad?
...but not Applicative:
I don't have a good example. There is Const, but ideally I'd like a concrete non-Monoid and I can't think of any. All types are basically numeric, enumerations, products, sums, or functions when you get down to it. You can see below pigworker and I disagreeing about whether ...
Difference between an API and SDK
...ring in your house.
an SDK is implementation tooling. It's like a kit that allows** you to build something custom to hook up to the telephone system or electrical wiring.
*Anything can use an API. Some APIs have security provisions to require license keys, authentication, etc. which may prohibit c...
How to Correctly Use Lists in R?
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Just to address the last part of your question, since that really points out the difference between a list and vector in R:
Why do these two expressions not return the same result?
x = list(1, 2, 3, 4); x2 = list(1:4)
A list can contain any other class as each element. So you can ha...