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gh-elaraai-east-plugin/skills/east-development/examples/01-basic-functions.md
2025-11-29 18:25:07 +08:00

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# Basic East Functions - Examples
This file contains simple examples to get started with East functions.
## Example 1: Increment Function
Adds 1 to an integer:
```typescript
return East.function([East.IntegerType], East.IntegerType, ($, x) => {
return $.return(x.add(1n));
});
```
## Example 2: Add Two Integers
Adds two integers together:
```typescript
return East.function(
[East.IntegerType, East.IntegerType],
East.IntegerType,
($, x, y) => {
return $.return(x.add(y));
}
);
```
## Example 3: String Concatenation
Appends "!" to a string:
```typescript
return East.function([East.StringType], East.StringType, ($, s) => {
return $.return(s.concat("!"));
});
```
## Example 4: Boolean Comparison
Checks if an integer is greater than zero:
```typescript
return East.function([East.IntegerType], East.BooleanType, ($, x) => {
return $.return(East.greater(x, East.value(0n)));
});
```
## Example 5: Float Multiplication
Doubles a float value:
```typescript
return East.function([East.FloatType], East.FloatType, ($, x) => {
return $.return(x.multiply(2.0));
});
```
## Testing These Examples
Each example can be validated using the `east_compile` tool:
```json
{
"typescript_code": "<paste example code here>"
}
```
If compilation succeeds, you'll receive the serialized IR. If it fails, you'll get a clear error message explaining what needs to be fixed.