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6 min readTo read CSV file values in a Jenkins pipeline using Groovy, you can use the readFile() function in combination with the CSV parsing libraries available in Groovy. First, use the readFile() function to read the CSV file into a string variable. Then, you can use the libraries like opencsv or Apache Commons CSV to parse the CSV string and extract the values you need. Iterate over the CSV rows and access the columns to read the values.
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4 min readIn Groovy, you can escape quotes by using a backslash () before the quote. This will tell the interpreter to treat the quote as a literal character instead of the beginning or end of a string. For example, if you want to include a double quote within a double-quoted string, you would write it as " instead of just ". This way, the interpreter will know to include the quote in the string instead of ending it. Similarly, for single quotes, you can escape them with a backslash as well.
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4 min readTo execute a command via ssh in Elixir, you can use the :ssh module that comes with the Erlang standard library. You can establish an SSH connection with a remote server using the :ssh.connect/3 function, which takes the hostname, username, and options as arguments. Once the connection is established, you can use the :ssh.exec/3 function to execute a command on the remote server. This function takes the SSH connection, the command to be executed, and options as arguments.
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6 min readTo get the JSON values from the response in Groovy, you can first parse the JSON response using libraries like JsonSlurper. Once you have parsed the response, you can access the values by using the relevant keys. For example, you can access the value of a key named "name" in the JSON response by using dot notation like jsonObject.name. Make sure to handle any exceptions that may occur during parsing or accessing the values.
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5 min readTo update a boolean variable inside a function in Elixir, you can use pattern matching and recursion. Inside the function, you can match on the current value of the boolean variable and return a new value based on the desired update.
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5 min readTo convert a string to a JSON object in Java or Groovy, you can use a JSON library such as Jackson or Gson. First, import the necessary packages for the library you are using. Then, you can parse the string using the library's parser and convert it into a JSON object. Once you have the JSON object, you can access its properties and values using standard JSON syntax. Remember to handle any exceptions that may occur during the conversion process.
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7 min readSeeding data in Elixir involves creating a module specifically for populating the database with sample data. This module typically contains functions that insert records into the database using Ecto, the database wrapper for Elixir.To seed data with Elixir, you can define a function in the seed module that will be responsible for inserting the data into the database. This function can generate the necessary data and use Ecto's Repo.
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5 min readTo throw an IOException on an InputStream method in Groovy testing, you can mock the InputStream object using a testing framework like Spock or Mockito and then use the when-thenReturn method to throw the exception. For example, in Spock, you can write a test case where you mock the InputStream object and then specify that when a certain method is called on the InputStream object, it should throw an IOException.
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4 min readSuffix annotation in Rust allows programmers to specify the type of a numeric literal by adding a suffix to the end of the number. This can be useful when working with numbers that can have multiple types, such as integers and floats.For example, if you wanted to specify that a literal number should be treated as a 64-bit integer, you can add the suffix i64 to the end of the number.
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4 min readTo add an array as an element in another array using Groovy, you can simply use the << operator. You can do this by accessing the desired index of the array and assigning the array you want to add to that index using the << operator.
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3 min readIn Elixir, parsing datetime values can be done using the DateTime.from_iso8601/2 function. This function takes a string representing a datetime value in ISO 8601 format as input and returns a datetime struct. For example: DateTime.from_iso8601("2021-10-15T12:30:45Z") This will return a datetime struct representing the datetime value "2021-10-15T12:30:45Z". If the input string is not in the correct format, the function will return {:error, reason}.