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Add type iterator docs.

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This commit is contained in:
Stephen Chung
2020-12-14 15:15:05 +08:00
parent ecc08271d9
commit 6f2fecb76b
16 changed files with 91 additions and 28 deletions
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27
doc/src/language/logic.md
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@@ -6,6 +6,15 @@ Logic Operators
Comparison Operators
-------------------
| Operator | Description |
| :------: | ------------------------- |
| `==` | equals to |
| `!=` | not equals to |
| `>` | greater than |
| `>=` | greater than or equals to |
| `<` | less than |
| `<=` | less than or equals to |
Comparing most values of the same data type work out-of-the-box for all [standard types] supported by the system.
However, if using a [raw `Engine`] without loading any [packages], comparisons can only be made between a limited
@@ -43,15 +52,15 @@ ts != 42; // true - types cannot be compared
Boolean operators
-----------------
| Operator | Description |
| ----------------- | ------------------------------------- |
| `!` | boolean _Not_ |
| `&&` | boolean _And_ (short-circuits) |
| <code>\|\|</code> | boolean _Or_ (short-circuits) |
| `&` | boolean _And_ (doesn't short-circuit) |
| <code>\|</code> | boolean _Or_ (doesn't short-circuit) |
| Operator | Description | Short-Circuits? |
| :---------------: | ------------- | :-------------: |
| `!` (prefix) | boolean _NOT_ | no |
| `&&` | boolean _AND_ | yes |
| `&` | boolean _AND_ | no |
| <code>\|\|</code> | boolean _OR_ | yes |
| <code>\|</code> | boolean _OR_ | no |
Double boolean operators `&&` and `||` _short-circuit_, meaning that the second operand will not be evaluated
Double boolean operators `&&` and `||` _short-circuit_ - meaning that the second operand will not be evaluated
if the first one already proves the condition wrong.
Single boolean operators `&` and `|` always evaluate both operands.
@@ -65,3 +74,5 @@ a() | b(); // both a() and b() are evaluated
a() & b(); // both a() and b() are evaluated
```
All boolean operators are [built in][built-in operators] for the `bool` data type.