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8 min readTo parse a numeric type date in d3.js, you can use the d3.timeParse method. Here's how you can do it:First, you need to define the date format you are working with. For example, if you have a numeric date in the format "yyyyMMdd" (e.g., 20210101), you can define the format as "%Y%m%d". Use the d3.timeParse method to create a parser based on the defined format. For example, if the format is "%Y%m%d", you can create a parser as follows: var parser = d3.
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8 min readGenerics in Kotlin allow us to write more flexible and reusable functions and classes. They make it possible to create code that can work with different types, without sacrificing type safety. In this guide, we will explore how to create and use generics in Kotlin.To create a generic function or class, we first need to declare the generic type parameters. We use angle brackets (<>) to define the type parameter after the function or class name.
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8 min readDependency Injection (DI) is a design pattern used to implement loose coupling between software components by allowing objects to be created and managed by an external entity. Kotlin, being a modern language, provides several ways to implement DI in your applications.Constructor Injection: The most commonly used method, where dependencies are provided through a class's constructor.
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7 min readThe Triple Exponential Average (TRIX) is a technical indicator used in day trading to identify trends and determine buy or sell signals. It is a momentum oscillator that calculates the rate of change of a triple-smoothed moving average.The TRIX indicator works by taking a standard moving average of the price data, then calculating another moving average of the result, and finally, a third moving average of the second moving average.
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6 min readAnnotations in Kotlin are a mechanism to provide additional meta-information to the code. They can be used to modify the behavior of elements such as functions, classes, properties, or even entire Kotlin files. Here's how you can work with annotations in Kotlin:Declaring Annotations: To declare an annotation, you use the @ symbol followed by the keyword annotation, and the name of the annotation. Annotations can include optional parameters and default values.
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9 min readThe Elder-Ray Index is a technical analysis tool used in trading to measure the strength of the bulls and bears in the market. It was developed by Alexander Elder and is based on the concept of moving averages and price momentum.The Elder-Ray Index consists of two components: the Bull Power and the Bear Power. Bull Power measures the ability of the bulls to push prices upwards, while Bear Power measures the ability of the bears to push prices downwards.
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6 min readConcurrency in Kotlin refers to the ability to execute multiple tasks or parts of a program simultaneously. Kotlin provides several mechanisms to handle concurrency effectively, including coroutines, threads, and locks.Coroutines: Coroutines are a lightweight concurrency framework introduced in Kotlin. They allow you to write asynchronous code in a more sequential and readable manner. Coroutines use suspend functions that can be paused and resumed without blocking the underlying thread.
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10 min readType casting in Kotlin allows you to convert an object of one type to another type. This can be useful when you want to treat an object as its subtype or convert it to a specific type for performing certain operations. To perform type casting in Kotlin, you can use the as operator or the is operator.Using the as operator: The as operator is used for explicit type casting. It is used when you are sure that the object being casted has the target type.
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10 min readTo use MATLAB for solving optimization problems, you need to follow these steps:Define the objective function: Start by defining the mathematical function that you want to optimize. This function can be either linear or non-linear. Define constraints: Constraints are the conditions that restrict the variables' values in the optimization problem. Constraints can be equality constraints (such as x + y = 10) or inequality constraints (such as x + y ≤ 10).
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11 min readThe Stochastic Oscillator is a technical indicator used in trading and investing to measure the strength and momentum of a financial asset's price movements. It was developed by George C. Lane in the late 1950s.The Stochastic Oscillator compares the closing price of an asset over a specific time period to its price range during that period. It is a range-bound oscillator that fluctuates between 0 and 100.
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7 min readWorking with files in Kotlin involves reading and writing data to and from different files using various functions and classes provided in the standard library. Here are some key points to consider:Reading from a file: To read from a file in Kotlin, you can use the File class from the java.io package. Create a File object with the path to the file, and then use functions like readText(), readLines(), or inputStream() to read the content as text or lines.