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5 min readTo create multiple instances from a template map in Groovy, you can start by defining a template map with the desired key-value pairs. Then, you can iterate over a list or range of values to create multiple instances based on the template map. Within the iteration, you can customize each instance by setting specific values for specific keys. This way, you can quickly generate multiple instances from a predefined template map without duplicating code.
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4 min readTo add a pipe to a Groovy exec command line, you can use the | symbol to pipe the output of one command as input to another command. For example, if you are running a Groovy script that executes a shell command and you want to pipe the output of that command to another command, you can do so by using the | symbol.Here is an example of how to add a pipe to a Groovy exec command line: def command = "ls -l | grep 'groovy'" def proc = command.execute() proc.
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7 min readTo keep changing background color in Kotlin, you can define an array of colors and update the background color of the view at regular intervals. You can achieve this by using a Timer or a Handler to trigger the color changes. Create a function that generates a random color from the array and set it as the background color of the view. Then use the Timer or Handler to call this function periodically to update the background color.
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7 min readTo call a Kotlin function from JavaScript, you can use the Kotlin/JS plugin that allows you to compile Kotlin code to JavaScript. First, define your Kotlin function in a Kotlin file using the external keyword to tell the Kotlin compiler that this function will be defined elsewhere. Then, compile the Kotlin code to JavaScript using the Kotlin/JS plugin.
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5 min readIn Kotlin, a context in an object refers to the surrounding environment in which the object is being used. It can include information about the state of the application, current user input, or any other relevant data. To define the context in a Kotlin object, you can pass the context as a parameter to the object's constructor or method. This allows the object to access and interact with the context as needed during its execution.
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5 min readTo remove the title from the toolbar menu in Kotlin, you can simply set the title of the toolbar to null or an empty string. This will remove the title from the toolbar and display only the navigation icon or other menu items. You can do this by calling the setTitle() method on the toolbar and passing null or an empty string as the title parameter. This will effectively remove the title from the toolbar menu in Kotlin.
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5 min readIn Kotlin, you can return multiple values from a function by using either a data class or a pair.One way to return multiple values is to create a data class that contains all the values that you want to return. You can then create an instance of this data class in the function and return it.Another way to return multiple values is to use a Pair object. You can create a Pair object with the values that you want to return, and then return this Pair object from the function.
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3 min readTo add slashes between the characters of a string in Kotlin, you can use the joinToString function with a delimiter of /. This function allows you to concatenate all characters in the string with the specified delimiter in between each character. Here is an example of how you can achieve this: val originalString = "hello" val stringWithSlashes = originalString.
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4 min readTo check if three numbers are different in Kotlin, you can compare them using conditional statements. You can use nested if-else statements to compare each pair of numbers and ensure that all three numbers are different from each other. You can also use the distinct function to remove duplicate elements from a list or array containing the three numbers, and then check if the size of the resulting list is equal to 3. This would indicate that all three numbers are different.
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7 min readIn Kotlin, you can use the sortedBy function to sort a list of objects based on a specific property of the objects. For example, if you have a list of objects of type Person and you want to sort them based on their age, you can call sortedBy { it.age } on the list. This will return a new list containing the objects sorted in ascending order based on their age. If you want to sort them in descending order, you can use sortedByDescending { it.age }.
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7 min readTo run blocking Java code concurrently in Kotlin, you can use the runBlocking function from Kotlin's coroutine library. This function allows you to execute blocking code within a coroutine without blocking the main thread. You can use this function to wrap your Java blocking code and execute it concurrently in a coroutine. This way, you can take advantage of Kotlin coroutines to run your blocking code efficiently and concurrently without blocking the main thread.