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macro name(ex) ... end quote ... end :(...) $x Meta.quot(x) QuoteNode(x) esc(x) Julia’s metaprogramming features are heavily inspired by those of Lisp-like languages, and will seem familiar to those with some Lisp background. Metaprogramming is very powerful. When used correctly, it ...

Aspnet core is built with Dependency Injection as one of its key core concepts. It introduces one conforming container abstraction so you can replace the builtin one with a third-party container of your choice. IServiceCollection.Add(ServiceDescriptor item); IServiceCollection.AddScoped(Type ...

There will come a time where your CakePHP application will need to query more than one database. The method for requesting Models from non-default databases is not present in the official documentation.

Let's clear up some misconceptions that beginners might make. You may have encountered functions such as: max :: (Ord a) => a -> a -> a max m n | m >= n = m | otherwise = n Beginners will typically view max :: (Ord a) => a -> a -> a as function that takes t...

ParametersDetailsmanagerCLLocationManager referenceregionCLRegion could be circular region (geofence or beacon region)beaconsArray of CLBeacon contains all ranged beacons Beacons are IOT objects. We are focusing on those which conform to iBeacon protocol a Apple standard. Each beacon is a one...

We can add validations to our application by adding Data Annotations to our model classes. Data Annotations allow us to describe the rules we want applied to our model properties, and ASP.NET MVC will take care of enforcing them and displaying appropriate messages to users.

DataFrame.merge(right, how='inner', on=None, left_on=None, right_on=None, left_index=False, right_index=False, sort=False, suffixes=('_x', '_y'), copy=True, indicator=False) Merge DataFrame objects by performing a database-style join operation by columns or indexes. If joining columns ...

An object's property can be assigned a static value which stays constant until it is explicitly assigned a new value. However, to make the fullest use of QML and its built-in support for dynamic object behaviors, most QML objects use property bindings. Property bindings are a core feature of QML...

When searching against the target of a copyField instructions, the analyzer stack used is the one of the copyField target, not source. This is especially important to remember with default configuration that searches against generic text field.

Random() Random(int Seed) int Next() int Next(int maxValue) int Next(int minValue, int maxValue) ParametersDetailsSeedA value for generating random numbers. If not set, the default value is determined by the current system time.minValueGenerated numbers won't be smal...

dq = deque() # Creates an empty deque dq = deque(iterable) # Creates a deque with some elements dq.append(object) # Adds object to the right of the deque dq.appendleft(object) # Adds object to the left of the deque dq.pop() -> object # Removes and returns the righ...

ROW_NUMBER ( ) OVER ( [ PARTITION BY value_expression , ... [ n ] ] order_by_clause )