Posts (page 190)
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7 min readTo create a donut chart in D3.js, you can start by defining the size and layout of your SVG container. Include the necessary D3.js script in your HTML file and select the SVG container using D3.js.Next, you will need to create the data array that will be used to represent the different sections of the donut chart. This data should include a value and label for each section.To actually create the donut chart, you can use D3.js functions such as 'd3.
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3 min readTo print JSON in a single line from a bash script, you can use the jq command along with the -c flag.For example: echo '{"key": "value"}' | jq -c This will output the JSON in a single line. You can also use this in a script by assigning the JSON to a variable and then printing it.[rating:9dc92ecc-3434-41a9-a966-6a0e94614b0e]How to pretty print json in bash script?You can use the jq command in your bash script to pretty print JSON.
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5 min readTo get the exact type of a parameter in Kotlin, you can use the ::class syntax to retrieve the class of the parameter or the javaClass property to get the Java class of the parameter. You can then use the simpleName property to get the name of the class as a String. This way, you can determine the exact type of a parameter at runtime in Kotlin.[rating:5c241908-e13b-494b-ac73-26ced6913ab0]What is the significance of smart casts in Kotlin.
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4 min readIn D3.js, you can add labels to elements by selecting the elements using the select() function, and then adding text elements using the append() function. You can position the labels using the 'x' and 'y' attributes, and style them using CSS properties like 'fill', 'font-size', and 'font-family'. Labels can also be added dynamically by binding data to elements and setting the text content using the text() function.
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2 min readTo replace all linefeeds with "\n" in bash, you can use the tr command. Here is an example of how you can achieve this: tr '\n' '\\'n' < inputfile.txt > outputfile.txt This command reads the content of inputfile.txt, replaces all linefeeds with "\n", and writes the modified content to outputfile.txt. You can adjust the filenames to match your specific needs.
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4 min readTo add a calendar header in Kotlin, you can create a custom view or modify an existing calendar library. You can add a TextView or any other view at the top of the calendar layout and set the text to display the current month and year. You can also customize the header by changing the font, text color, background color, and other styling properties to match the design of your app. Lastly, you can add click listeners or gestures to allow users to navigate to previous or next months.
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5 min readTo create multi-series charts in D3.js, you need to first define the data for each series you want to display. This data should be structured in an array format, with each element representing a series and containing the data points for that series.Next, you will need to set up the scales for your x and y axes, as well as decide on the layout and positioning of your chart elements. D3.
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3 min readTo shuffle a list of sequence numbers in Bash, you can use the shuf command. First, create an array containing the sequence of numbers you want to shuffle. Then, use the shuf command to shuffle the array.
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5 min readTo push an item to an array in Kotlin, you can use the plus operator or the plusAssign operator.Using the plus operator, you can create a new array by adding the new item to the existing array. For example: val originalArray = arrayOf("item1", "item2", "item3") val newItem = "item4" val newArray = originalArray.plus(newItem) Using the plusAssign operator, you can directly add the new item to the existing array.
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4 min readTo implement brushing and zooming in D3.js, you can use the brush and zoom functions provided by D3 library. Brushing allows users to select a range on a chart to interact with the data, while zooming allows users to zoom in and out of the chart.To add brushing and zooming functionality to a D3.js chart, you can start by setting up the scales and the axes for the chart. Then, you can create the brush and zoom functions by using the d3.brush() and d3.zoom() methods.
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5 min readTo exclude certain file paths in a bash script, you can use the find command with the -not option to exclude specific files or directories. You can also use the grep command to filter out specific paths based on patterns or criteria. Another approach is to use the find command with the -prune option to skip certain directories while searching for files. Additionally, you can use conditional statements and regular expressions to exclude specific file paths in your bash script.
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5 min readTo use STOMP in Kotlin, you first need to include the necessary dependencies in your project. You can add dependencies for STOMP in your build.gradle file or pom.xml file, depending on the build system you are using. Once you have added the dependencies, you can create a STOMP client instance and connect to a STOMP endpoint using the appropriate URL.You can subscribe to STOMP topics or queues to receive messages from the server.