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forEach loop

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In my opinion, forEach loop is super cool, elegant and short.
In the code above you may see that forEach loop takes three arguments, but most of the time you will only use the current value to do stuff.
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We may use a call back to make a code shorter or the normal function.
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If we need to show the index we can do this.
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It`s fun and simple. If you want to know more about forEach loop here is the link
forEach loop MDN

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11 Tips That Make You a Better Typescript Programmer


1 Think in {Set}

Type is an everyday concept to programmers, but it’s surprisingly difficult to define it succinctly. I find it helpful to use Set as a conceptual model instead.

#2 Understand declared type and narrowed type

One extremely powerful typescript feature is automatic type narrowing based on control flow. This means a variable has two types associated with it at any specific point of code location: a declaration type and a narrowed type.

#3 Use discriminated union instead of optional fields


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