I have a list of dictionaries that looks something like this: toCSV = [{‘name’:’bob’,’age’:25,’weight’:200},{‘name’:’jim’,’age’:31,’weight’:180}] What should I do to convert this to a csv file that looks something like this: name,age,weight bob,25,200 jim,31,180 7 Answers 7
Recently I have conversation with a colleague about what would be the optimal way to convert List to Map in Java and if there any specific benefits of doing so. I want to know optimal conversion approach and would really appreciate if any one can guide me. Is this good approach: List<Object[]> results; Map<Integer, String> … Read more
There is this example code, but then it starts talking about millisecond / nanosecond problems. The same question is on MSDN, Seconds since the Unix epoch in C#. This is what I’ve got so far: public Double CreatedEpoch { get { DateTime epoch = new DateTime(1970, 1, 1, 0, 0, 0, 0).ToLocalTime(); TimeSpan span = … Read more
What is the best way to convert a String in the format ‘January 2, 2010’ to a Date in Java? Ultimately, I want to break out the month, the day, and the year as integers so that I can use Date date = new Date(); date.setMonth().. date.setYear().. date.setDay().. date.setlong currentTime = date.getTime(); to convert the … Read more
How do I convert an array to a list in Java? I used the Arrays.asList() but the behavior (and signature) somehow changed from Java SE 1.4.2 (docs now in archive) to 8 and most snippets I found on the web use the 1.4.2 behaviour. For example: int[] spam = new int[] { 1, 2, 3 … Read more
How do I convert a string to an integer in JavaScript? 3 31
In your example, it is because you can’t have a List of a primitive type. In other words, List<int> is not possible. You can, however, have a List<Integer> using the Integer class that wraps the int primitive. Convert your array to a List with the Arrays.asList utility method. Integer[] spam = new Integer[] { 1, 2, 3 }; List<Integer> list = Arrays.asList(spam);
That’s the hard way, and those java.util.Date setter methods have been deprecated since Java 1.1 (1997). Moreover, the whole java.util.Date class was de-facto deprecated (discommended) since introduction of java.time API in Java 8 (2014). Simply format the date using DateTimeFormatter with a pattern matching the input string (the tutorial is available here). In your specific case of “January 2, 2010” as the input … Read more
