JavaScript's falsy values: - false - undefined - null - The number 0 - The number NaN - The empty string

"No one hates software more than software developers." - Jeff Atwood

"Computer science education cannot make anybody an expert programmer any more than studying brushes and pigment can make somebody an expert painter." - Eric Raymond

Check for if (-1 == x) instead of if (x == -1) to avoid bugs like if(x = -1)

Theory is when you know something, but it doesn't work Practice is when something works, but you don't know why Programmers combine theory and practice Nothing works and they don't know why

I've yet to see a UML diagram in a professional environment.

"Every program has (at least) two purposes: the one for which it was written, and another for which it wasn't." - Alan J. Perlis

"The only constructive theory connecting neuroscience and psychology will arise from the study of software." - Alan J. Perlis

There are no "simple" bugs.

"Program testing can be a very effective way to show the presence of bugs, but is hopelessly inadequate for showing their absence." - Edsger Dijkstra

If the code and the comments disagree, they are both probably wrong

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Inside every complex program is a simple program trying to get out

In theory, theory and practice are the same. In practice, they're not.

"There are no significant bugs in our released software that any significant number of users want fixed." - Bill Gates

First, make it work. Then, make it fast.

"Test doubles are objects that replace real dependencies to enable automated testing. They are the automated testing equivalent of movie stunt people: they take the place of the original since having the real one is expensive or impractical." Excellent analogy by @venkat_s

In JavaScript, a function always returns a value. If the return value is not specified, then it returns undefined.

"Part of the inhumanity of the computer is that, once it is competently programmed and working smoothly, it is completely honest." - Isaac Asimov

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ssh 101 - ssh stands for secure shell and is used to securely connect to remote hosts - ssh creates a TCP connection on port 22 - Syntax: ssh username@hostname (or ip address)