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How to retrieve an element from a set without removing it?
...n't require copying the whole set:
for e in s:
break
# e is now an element from s
Or...
e = next(iter(s))
But in general, sets don't support indexing or slicing.
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When to use enumerateObjectsUsingBlock vs. for
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Ultimately, use whichever pattern you want to use and comes more naturally in the context.
While for(... in ...) is quite convenient and syntactically brief, enumerateObjectsUsingBlock: has a number of features that may or may not prove interesting:
enumerateObjectsUsingBlock: ...
Java Reflection Performance
...class via reflection is, by magnitude, more expensive.
Quoting Java's documentation on reflection:
Because reflection involves types that are dynamically resolved, certain Java virtual machine optimizations can not be performed. Consequently, reflective operations have slower performance than t...
Why can't I inherit static classes?
...seems to be no good reason to inherit a static class. It has public static members that you can always access via the class name itself. The only reasons I have seen for inheriting static stuff have been bad ones, such as saving a couple of characters of typing.
There may be reason to consider mecha...
Spring Data JPA find by embedded object property
I want to write a Spring Data JPA repository interface method signature that will let me find entities with a property of an embedded object in that entity. Does anyone know if this is possible, and if so how?
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No provider for “framework:jasmine”! (Resolving: framework:jasmine)
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I had the same error after creating a new project the yeoman angular generator (yo angular).
The solution for me was adding "karma-jasmine" to the devDependencies in packages.json and running "npm install" again.
npm install karma-jasm...
How/When does Execute Shell mark a build as failure in Jenkins?
... It allows the builds to be triggered only when there are changes (or on timer, or manual, if you prefer). It keeps track of changes between builds. It shows those changes, so you can see which build was for which set of changes. It emails committers when their changes caused successful or failed bu...
Correct use of Multimapping in Dapper
...ing feature of dapper to return a list of ProductItems and associated Customers.
6 Answers
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How to not run an example using roxygen2?
...Philadelphia, PA 19104")
#'geocode("Philadelphia, PA")
#'dat <- data.frame(value=runif(3),address=c("3817 Spruce St, Philadelphia, PA 19104","Philadelphia, PA","Neverneverland"))
#'geocode(dat)
#'}
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What is the python “with” statement designed for?
I came across the Python with statement for the first time today. I've been using Python lightly for several months and didn't even know of its existence! Given its somewhat obscure status, I thought it would be worth asking:
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