Compiled Learning Objectives

At the end of the sprint, you should be able to do the following things. Make sure to check you can do them all, and if not, go back and keep practicing until you can.

Programming language concepts

• Define the term variable.
• Describe how a variable relates to a memory location.
• Give 3 examples of common operators.
• Define the && (and), || (or), and ! (not) operators.
• Explain what happens when you call a function.

Bitwise operators

• Describe the meaning of the &, |, ^, and ~ bitwise operators.
• Manually perform the function of the &, |, ^, and ~ bitwise operators on two integers.

Comparing programming languages

• Identify whether variables have fixed types in C, Python, and JavaScript.
• Identify and explain the differences between a function definition in C and Python.
• Compare compiled and interpreted languages.
• Explain one advantage of compiled languages, and one advantage of interpreted languages.

Shell pipelines

• Describe what a shell pipeline is.
• Explain why we use shell pipelines.
• Explain the difference between stdout and stderr.
• Explain what gets passed between two programs when they’re combined with a |.

grep in pipelines

• List the files in a directory which contain an upper-case letter in their name with ls and grep.
• Count the number of files in a directory which contain an upper-case letter in their name with ls, grep, and wc.
• Explain why we don’t need to pass -1 to ls when piping its output.

sort and uniq

• Count the occurrences of different lines within a file using sort and uniq.

head and tail

• Output the first 5 lines of a file using head.
• Output the last 5 lines of a file using tail.
• Output the five lines starting 10 lines into a file using head and tail.

tr

• Replace all occurrences of one character with another using tr.

jq

• Use jq to retrieve information from a JSON file

Discussion: programming language concepts

• Define the term variable.
• Explain the purpose of main memory.
• Describe how a variable relates to a memory location.
• Describe how a string is laid out in memory.
• Explain what happens when you call a function.
• Define the term class.
• Explain the relationship between a class and an instance of a class.
• Explain why computers have secondary storage.