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Daniel Kang 2019-01-17 08:12:53 -08:00 committed by GitHub
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@ -82,7 +82,7 @@ a == "foo" // still "foo"
> [Run in Playground](https://tengolang.com/?s=1d39bc2af5c51417df82b32db47a0e6a156d48ec)
Type is not explicitly specified, but, you can use type coercion functions to convert between types.
Type is not directly specified, but, you can use type-coercion functions to convert between types.
```golang
s1 := string(1984) // "1984"
@ -93,7 +93,7 @@ c5 := char("X") // 'X'
```
> [Run in Playground](https://tengolang.com/?s=8d57905b82959eb244e9bbd2111e12ee04a33045)
You can use dot selector (`.`) and indexer (`[]`) operator to read or write elemens of arrays or maps.
You can use the dot selector (`.`) and indexer (`[]`) operator to read or write elemens of arrays, strings, or maps.
```golang
["one", "two", "three"][1] // == "two"
@ -122,14 +122,14 @@ d := "hello world"[2:10] // == "llo worl"
> [Run in Playground](https://tengolang.com/?s=214ab490bb24549578770984985f6b161aed915d)
In Tengo, functions are first-class citizen and be treated like any other variables. Tengo also supports closures, functions that captures variables in outer scopes. In the following example, the function that's being returned from `adder` function is capturing `base` variable.
In Tengo, functions are first-class citizen, and, it also supports closures, functions that captures variables in outer scopes. In the following example, the function returned from `adder` is capturing `base` variable.
```golang
adder := func(base) {
return func(x) { return base + x } // capturing 'base'
}
add5 := adder(5)
nine := add5(4) // nine
nine := add5(4) // == 9
```
> [Run in Playground](https://tengolang.com/?s=fba79990473d5b38cc944dfa225d38580ddaf422)
@ -186,7 +186,7 @@ if is_error(err1) { // 'is_error' builtin function
```
> [Run in Playground](https://tengolang.com/?s=5eaba4289c9d284d97704dd09cb15f4f03ad05c1)
You can load other scripts as import modules using `import` expression.
You can load other scripts as modules using `import` expression.
Main script:
```golang