keenhenry

Here are seven JavaScript concepts you must understand before you go into your next JavaScript job interview:

1. Prototypes - JavaScript is a prototype-based language. Even more, it's a delegation-based system, which means that each object has a prototype chain. When you try to access a property on an object, and that property is not found, JavaScript looks at the object's prototype. The prototype is a delegate object, which means that the property lookup is delegated to the prototype object. That object, in turn, may have its own prototype. The search continues up the prototype chain until it reaches the root prototype, which is usually Object.prototype. The best feature of this system is that many object instances can share the same methods on a prototype object, which conserves memory and enables easy code reuse. To assign a prototype to a new object, you can use Object.create(prototypeObject). Prototypal OO is the first course being offered in the "Learn JavaScript" series.

2. Functional Programming

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Requirements

• no upfront installation/agents on remote/slave machines - ssh should be enough
• application components should use third-party software, e.g. HDFS, Spark's cluster, deployed separately
• configuration templating
• environment requires/asserts, i.e. we need a JVM in a given version before doing deployment
• deployment process run from Jenkins

Solution

keenhenry

git ls-files -z | xargs -0n1 git blame -w | perl -n -e '/^.*\((.*?)\s*[\d]{4}/; print $1,"\n"' | sort -f | uniq -c | sort -n

keenhenry

The use of __main__.py to create executables

myprojectfolder/
    |_ __main__.py
    |_ __init__.py

Being __main__.py:

print("Hello")

keenhenry

People

:bowtie:	😄 :smile:	😆 :laughing:
😊 :blush:	😃 :smiley:	☺️ :relaxed:
😏 :smirk:	😍 :heart_eyes:	😘 :kissing_heart:
😚 :kissing_closed_eyes:	😳 :flushed:	😌 :relieved:
😆 :satisfied:	😁 :grin:	😉 :wink:
😜 :stuck_out_tongue_winking_eye:	😝 :stuck_out_tongue_closed_eyes:	😀 :grinning:
😗 :kissing:	😙 :kissing_smiling_eyes:	😛 :stuck_out_tongue:

keenhenry

Requirements

First you need to install pandoc.

I used brew install pandoc to install via Homebrew since I'm on a mac.

Writing your presentation

Make a slides.md for your slides (or name it whatever you want!). I put images in an /images/ folder. You can see how links and images and all of that work from this sample: