solidity docs

everything is one step at a time don’t say how am going to understand all of this. Just go step by step know you call a function inside another function

Data Types

• Reference Type

• Value Type

  • variables of these types will always be passed by value i.e always copied when they’re used in functions. Used directly not being referenced.
  • e.g
    • Booleans bool: true/false
    • operators:
      • logical negation “!”
      • && logical conjunction
      • || logical disjunction
      • == equality
      • != inequality

• Integers

  • signed(int) - positive & negative values
  • unsigned integer(unit) - positive values

  operators

  • comparisons: ≤ , <. ==,
  • bit operators
  • shift operators
  • arithmetic operators

  XAND vs XOR operator - stackoverflow

  infinite storage: byte

  uint

  • solidity shell
  • bitwise operators - computer science

   1 & 1
  1 | 3
  1 ^  3
  ~ 12 //negatation of 12
  01
  11
  10