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How is pattern matching in Scala implemented at the bytecode level?
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The low level can be explored with a disassembler but the short answer is that it's a bunch of if/elses where the predicate depends on the pattern
case Sum(l,r) // instance of check followed by fetching the two arguments and assigning to two variabl...
How to Deal with Temporary NSManagedObject instances?
...e NSManagedObject instances, do some stuff with them and then trash them or store to sqlite db. The problem is, I cannot create instances of NSManagedObject unconnected to NSManagedObjectContext and this means I have to clear up somehow after I decide that I don't need some of the objects in ...
Is it possible to override the configuration of a plugin already defined for a profile in a parent P
... of my project, I have such a profile defining some configurations useful for this project (so that I can't get rid of this parent POM) :
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Python Flask Intentional Empty Response
Is there a way to return a response (from make_response() object or similar) with certain properties so that it doesn't render the page again and doesn't do anything else either. I am trying to run a code on the server without generating any output
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Git: How to return from 'detached HEAD' state
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If you remember which branch was checked out before (e.g. master) you could simply
git checkout master
to get out of detached HEAD state.
Generally speaking: git checkout <branchname> will get you out of that.
If you don't remember the last branch name, try
git...
Java Interfaces/Implementation naming convention [duplicate]
... classes / interfaces you create?
Sometimes I don't have implementation information to add to the implementation name - like interface FileHandler and class SqlFileHandler .
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How do I convert a NSString into a std::string?
...ding if you are going to end up using std::string. You can use UTF-8 with normal std::strings, but keep in mind that those operate on bytes and not on characters or even graphemes. For a good "getting started", check out this question and its answer.
Also note, if you have a string that can't be re...
Initialising mock objects - MockIto
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For the mocks initialization, using the runner or the MockitoAnnotations.initMocks are strictly equivalent solutions. From the javadoc of the MockitoJUnitRunner :
JUnit 4.5 runner initializes mocks annotated with Mock, so tha...
Is it possible to include a file in your .gitconfig
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Git (1.7.10+) now supports this syntax in .gitconfig:
[include]
path = /path/to/file
See here for a detailed description of the git change and its edge cases.
By the way, a couple of subtleties worth pointing out:
Environment-variable ex...
Default function arguments in Rust
...it likely that it will eventually be implemented, but there’s no active work in this space at present.
The typical technique employed here is to use functions or methods with different names and signatures.
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