| PascalCase |
| camelCase |
| kebab-case |
| snake_case |
| strHungarianNotation |
| ** | exponential |
| % | remainder |
| ?? | nullish coalescing |
| ?. | optional chaining / null-safe |
| 1 | Edit time |
| 2 | Compile time |
| 3 | Link time |
| 4 | Distribution time |
| 5 | Installation time |
| 6 | Load time |
| 7 | Runtime |
| 1 byte = 8 bits |
| 4 bits = 1 nibble |
| Digits | Unique values | 1 byte's first value | 1 byte's last value | |
| Binary | 01 | 2 ** 8 = 256 | 0 | 1111 1111 |
| Decimal | 0123456789 | 10 ** 8 | 0 | 255 |
| Hex | 0123456789ABCDEF | 16 ** 8 | 0 | FF |
| Binary | Decimal | Hex | Binary | Decimal | Hex |
| 0000 | 0 | 0 | 1000 | 8 | 8 |
| 0001 | 1 | 1 | 1000 | 9 | 9 |
| 0010 | 2 | 2 | 1010 | A | |
| 0011 | 3 | 3 | 1011 | B | |
| 0100 | 4 | 4 | 1100 | C | |
| 0101 | 5 | 5 | 1101 | D | |
| 0110 | 6 | 6 | 1110 | E | |
| 0111 | 7 | 7 | 1111 | F |
| Int | |
| Unsigned | + |
| Signed | + and - |
| Function | func myFunc(): bool {
// do this
// do that
// always return
return true
}
|
| Subroutine | func myFunc(): void {
// do this
// do that
// do not return
} |
| Callback | func myFunc(callback) {
callback('param')
}
|
| Closure | func myFunc(x) {
return anotherFunc(y) {
// this anotherFunc is the closure
return x + y
}
}
|
| Higher-order | func higherOrder {
print(getFunc(), 10)
}
func print(getFunc, val) {
getFunc(val)
}
func getFunc(val) {}
|
| Recursion | func myFunc() {
myFunc()
}
|
| Pure | func f(x) {
// does not depend on external factors
return x + 2
}
|
| Impure | y = 1
func f(x) {
// depends on external factors
return x + y + 2
}
|
MAJOR.MINOR.PATCH
| MAJOR | Major update |
| MINOR | New feature |
| PATCH | Bugfix |
| ^1.0.1 |
|
| ~1.0.1 |
|
| 1.0.1 |
|
| UUID | Universally Unique Identifier | 2e1a887d-991a-4760-b035-bd7766e1f498 | |
| KSUID | Key-Sortable Unique Identifier | has a timestamp at its beginning | 0ujsszwN8NRY24YaXiTIE2VWDTS |
| Untyped | Operations regardless of type | |
| Typed | Operations specific to that data type | |
| Static | Types associated with variables | |
| Dynamic | Types associated with values | |
| Explicit | Explicit type declaration | |
| Implicit | Implicit type declaration | |
| Strong | Can't change variable type | |
| Weak | Can change variable type | |
| Nominal | Type attached to name | |
| Structural | Type attached to structure | |
| Type-Safe | Undefined behaviors throw errors | |
| HTML, CSS, SQL | Untyped |
| JS | Typed, Dynamic, Implicit, Weak, Nominal |
| TS | Typed, Static, Explicit, Strong, Structural |
| Python | Typed, Dynamic, Implicit, Weak, Nominal |
| PHP | Typed, Dynamic, Implicit, Weak, Nominal |
| Go | Typed, Static, Implicit, Strong, Structural |
| C | Typed, Static, Explicit, Weak, Nominal |
| Java | Typed, Static, Explicit, Strong, Nominal |
| C# | Typed, Static, Explicit, Strong, Nominal |
| Rust | Typed, Static, Implicit, Strong, Structural |