불리언 논리와 단락 평가

A bool holds just two values: true or false. Boolean logic lets you combine these answers to make richer decisions in your code.

Zig spells logical and with the keyword and. The whole expression is true only when both sides are true; otherwise it is false.

The keyword or gives you logical or. The result is true if either side is true, and false only when both are false.

Negate a bool with the ! operator. It flips true into false and false into true, letting you express the opposite condition.

Notice Zig uses the words and and or instead of && or ||. The spelled-out keywords make conditions read like plain English.

With and, if the left side is false the right side is never evaluated. The answer is already false, so Zig skips the rest.

With or, a true left side means the right side is skipped. The result is already true, so there is no need to look further.

Short-circuiting lets the first check protect the second. You can confirm something is valid before you ever touch it.

Because evaluation runs left to right, put the cheap or safe check first. A smart order avoids needless work and unsafe access.

Zig keeps logic strict: and, or, and ! work only on bools. You cannot pass an integer where a true-or-false value is expected.

Mix these operators to express any rule plainly. A line like canEdit and not isLocked reads almost like the policy it enforces.

In the expression a and b, when is b skipped?

You combine bools with and, or, and !, and you know each short-circuits left to right. Order your checks well and your rules stay clear. ✅