Simple Report all non-const variables declared at namespace scope. Avoid singletons Singletons are basically complicated global objects in disguise. In a multi-threaded environment, the initialization of the static object does not introduce a race condition unless you carelessly access a shared object from within its constructor.
Encourage and support attribute-granularity specs of namespaced keyword to value-spec. Combining keys into sets to specify maps becomes orthogonal, and checking becomes possible in the fully-dynamic case, i. Enable and start a dialog about semantic change and compatibility Programmers suffer greatly when they redefine things while keeping the names the same.
Use constructs like set membership and regular expressions for which compatibility can be determined, and provide tools for compatibility checking while leaving general predicate equality out of scope. Instead we check at the edges and run tests.
There is so much more we want to communicate and verify about our systems. Additionally, the properties we care most about are often those of the runtime values, not some static notion. Thus spec is not a type system.
So spec will not have unlabeled sequence components or untagged union bindings. The utility of this becomes evident when spec needs to talk to users about specs, e.
When all branches are named, you can talk about parts of specs using paths. Global namespaced names are more important Clojure supports namespaced keywords and symbols. Note here we are just talking about namespace-qualified names, not Clojure namespace objects. This categorically changes the self-description of maps, particularly in dynamic contexts, and encourages composition and consistency.
All functions have namespaced names which can serve as keys to their related data e. Code is data not vice versa In Lisps and thus Clojurecode is data. But data is not code until you define a language around it. Many DSLs in this space drive at a data representation for schemas.
But predicative specs have an open and large vocabulary, and most of the useful predicates already exist and are well known as functions in the core and other namespaces, or can be written as simple expressions.
Yes, this means that more of the surface area of clojure. The latter can be done even when the namespace-qualified keys present at runtime are not in the map spec. This is vital for composition and dynamicity.
Informational vs implementational Invariably, people will try to use a specification system to detail implementation decisions, but they do so to their detriment. The best and most useful specs and interfaces are related to purely information aspects.
Only information specs work over wires and across systems. We will always prioritize, and where there is a conflict, prefer, the information approach. There are very few bottom notions in this space and we will endeavor to stick to them.
There are few distinct structural notions - a handful of atomic types, sequential things, sets and maps.How to Write a Research Introduction. The introduction to a research paper can be the most challenging part of the paper to write.
The length of the introduction will vary depending on the type of research paper you are writing. An. TIPS to write a good introduction • Keep it Short A long and rambling introduction will soon put people off and lose your audience. • Define the Problem –The entire introduction should logically end at the research question.
Depending on your discipline, the number of chapters in a dissertation may vary. Let's examine the most common case and see how we can help you!
ADVANCED WRITING. IN ENGLISH AS A FOREIGN LANGUAGE A Corpus-Based Study of Processes and Products Horvath Jozsef Lingua Franca Csoport ADVANCED WRITING IN ENGLISH.
The Purdue University Online Writing Lab serves writers from around the world and the Purdue University Writing Lab helps writers on Purdue's campus. The Purdue University Online Writing Lab serves writers from around the world and the Purdue University Writing Lab helps writers on Purdue's campus.