Posts (page 72)
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9 min readTo print a PDF on the client side from a Groovy web application, you can follow these steps:Retrieve the PDF file: Make sure you have a PDF file that you want to print. This file can be stored on the server-side or generated dynamically by your Groovy web application. Prepare the print functionality: In your Groovy web application, create a button or link that triggers the print functionality. This can be achieved by adding an onclick event to the button/link.
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10 min readThe Exponential Moving Average (EMA) is a mathematical calculation used in technical analysis to smooth out price data points and provide a moving average of an asset's price over a specified period of time. It is similar to simple moving averages (SMA), but it places more weight on recent price data and reacts faster to recent price changes.EMA is calculated by applying a calculation formula that involves using the current price, the previous EMA value, and a smoothing factor.
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6 min readIn Groovy, to remove a temporary folder on exit, you can make use of the java.nio.file package. Here's how you can achieve it:First, define the temporary folder path that you want to remove. For example, let's say the path is stored in a variable named tempFolderPath. Next, use the Runtime.addShutdownHook() method to add a shutdown hook. This hook will be executed when the JVM is shutting down. Inside the shutdown hook, use the java.nio.file.
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5 min readRate of Change (ROC) is a concept used in mathematics and finance to measure the speed at which a variable is changing over a specific period of time. It is commonly expressed as a ratio or percentage, showing the relative change in a quantity with respect to time. ROC is widely used in various fields, including physics, economics, engineering, and more.To calculate ROC, you need two distinct data points over a given timeframe.
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6 min readTo configure slf4j in Groovy, you can follow these steps:Start by adding the slf4j dependencies to your project. You can do this by adding the following lines to your build file (e.g., Gradle or Maven): // Gradle implementation 'org.slf4j:slf4j-api:1.7.30' implementation 'org.slf4j:slf4j-simple:1.7.30' // Maven <dependencies> <dependency> <groupId>org.
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5 min readThe ".*" operator in Groovy is used to invoke the method on each element of a collection or array. It is often referred to as the "spread dot operator" or the "method spread operator."When used with a collection or array, the ".*" operator allows you to call a method on every element of that collection or array, without needing to explicitly iterate over each element.
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9 min readCandlestick patterns are one of the oldest methods used by technical analysts to forecast market movements. They are graphical representations of price movements in a specific time frame. Candlestick patterns capture the open, high, low, and closing prices within a selected time period. These patterns are useful for predicting short-term trends and potential reversals in market behavior.Candlestick patterns consist of individual candles or a combination of several candles formed consecutively.
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8 min readTo convert XML to JSON in Groovy, you can use the built-in libraries and functions provided by Groovy. Here's a general approach to achieve this conversion:First, you need to load the XML data into a Groovy XmlSlurper object. The XmlSlurper is a SAX-like parser in Groovy that allows you to parse and manipulate XML data easily. def xmlData = new XmlSlurper().parseText(xmlString) Next, create an empty Groovy HashMap object to hold the converted JSON data.
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10 min readWhen day trading, one commonly used technical indicator is the Moving Average Convergence Divergence (MACD). The MACD is a trend-following momentum indicator that helps traders identify potential buy or sell signals in order to capitalize on short-term price movements in the market.
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5 min readTo clear or limit the groovy "memoize" cache size, you can follow these steps:Understand memoization: In programming, memoization is a technique used to cache the results of a function so that subsequent calls with the same inputs can be retrieved from the cache instead of recomputing them. Groovy supports memoization through the built-in memoize method.
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11 min read"The Guide to Moving Min" is a comprehensive resource for anyone planning to relocate their pet small mammal, particularly a miniature animal referred to as a "Min." This guide provides valuable information, tips, and steps to ensure a smooth and stress-free moving experience for both the owner and the Min.
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7 min readIn Groovy, you can compare dates using the normal comparison operators, such as greater than (>), less than (<), greater than or equal to (>=), and less than or equal to (<=).Groovy provides a Date class that represents a specific moment in time. To compare two Date objects, you can simply use the comparison operators.Here's an example of how to compare dates in Groovy: import java.text.