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What Programming Language Should I Learn?

· Java Zone

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Several times a week I am asked by a contact/reader/someone on Reddit for advice on what they should learn next. The question comes from both junior and experienced programmers, and has been posed both as open-ended (“What should I learn?“) and multiple choice (“Python or Ruby?“, “Django or Flask?“, “iOS or Android?“, etc.).

Unless it is someone I’ve worked with, there is usually little (or no) accompanying information or context provided which makes any answer rather speculative. To respond with hard data on compensation figures or even an informed opinion regarding future demand for a skill may be helpful, but offering career advice blindly without any knowledge of the person borders on irresponsible.

The easy answer (the long view) is to just say that overall programming ability and knowledge are the most important factors in maximizing employability, and that languages and tools are mostly interchangeable for experienced professionals. “Any good engineer can learn a new language in n weeks/months” is commonly heard from those at the senior level. Whether this is true or not is debatable, but it still does not account for a multitude of factors that may make a particular language more favorable than another to an individual at any given time.

One needs to think of learning as a time investment, and investors need to consider maximizing ROI. Before deciding where to invest their time, it may be wise to research and evaluate some of the following.

  • Programming experience and background – Those with little or no programming experience are usually pushed towards a few languages, with Python and Ruby the most popular among bootcamps and courses aimed at beginners. Experienced programmers that have a larger set of realistic options may consider how quickly a language might be picked up based on the paradigms and concepts that are already familiar. Build on what you know. Many Java developers were C++ refugees in the late 90’s, and Java pros of the past decade are venturing into Scala and Go.
  • Availability of learning resources – People learn in different ways, so it’s important to first recognize their best learning method and then research what resources are available. Those who learn best by doing can find it challenging or expensive to find resources and tools for proprietary or highly-specialized languages. Classroom learning opportunities or books on emerging languages often don’t exist or may be cost prohibitive relative to common languages. Documentation and support for newer tools can be spotty or unreliable.
  • Market supply and demand – If employability is the impetus for learning (as opposed to intellectual curiosity, boredom, etc.), both the current and projected supply and demand for talent is worth noting. Supply and demand are not necessarily universal trends and can vary based on geography and experience level. As an example, demand for entry-level Haskell talent is almost non-existent but rises significantly with experience. Searching for jobs specifically within desired geographic regions and doing research with a tool like Indeed’s Job Trends may provide some insight into both local and national data.
  • Professional goals – What types of products do you want to work on? Those interested in gaming might benefit from different choices than those interested in web development or embedded systems. Do you measure job satisfaction by professional accomplishments or is compensation a bigger motivator? Certain industries pay better than others, and certain languages are more prevalent in those industries.
  • Popularity and adoption trends – Learning an esoteric language that employers don’t use can be helpful in becoming a better overall engineer, but useless for putting food on the table. Trying to become reasonably productive in a language after hours can take time, and the adoption levels and/or popularity of a language could potentially change during the learning process. Researching current and historical data can be helpful. In addition to Indeed Trends, other sources include theThoughtWorks RadarRedMonk rankings, and the TIOBE Index. Always consider how the ratings are assembled, past performances to determine trends over time, and keep in mind that others may be using the same data to make decisions. Just because a language is “#1″ today doesn’t mean it will be in a year, and identifying and prospecting underserved language camps experiencing high demand is one way to employability before the market supply catches up.
  • Community or vendor support – Is there a community of people dedicated to keeping the language vibrant and relevant? Is the language supported by a vendor in good standing, or are the stewards of the language in a poor position to continue? Regarding community, Raganwald tweeted this back in February and it resonated.

What did I miss?

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Published at DZone with permission of Dave Fecak, DZone MVB. See the original article here.

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