---
title: String
---

## Values

Functions and constants included in the String module.

### String.**concat**

<details disabled>
<summary tabindex="-1">Added in <code>0.2.0</code></summary>
No other changes yet.
</details>

```grain
concat: (str1: String, str2: String) => String
```

Concatenate two strings.

Parameters:

| param  | type     | description          |
| ------ | -------- | -------------------- |
| `str1` | `String` | The beginning string |
| `str2` | `String` | The ending string    |

Returns:

| type     | description         |
| -------- | ------------------- |
| `String` | The combined string |

Examples:

```grain
"Foo" ++ "Bar" == "FooBar"
```

### String.**toString**

<details disabled>
<summary tabindex="-1">Added in <code>0.1.0</code></summary>
No other changes yet.
</details>

```grain
toString: (value: a) => String
```

Converts the given operand to a string.
Provides a better representation of data types if those types are provided from the module.

Parameters:

| param   | type | description |
| ------- | ---- | ----------- |
| `value` | `a`  | The operand |

Returns:

| type     | description              |
| -------- | ------------------------ |
| `String` | The operand, as a string |

### String.**print**

<details>
<summary>Added in <code>0.1.0</code></summary>
<table>
<thead>
<tr><th>version</th><th>changes</th></tr>
</thead>
<tbody>
<tr><td><code>0.6.0</code></td><td>Added support for custom suffixes</td></tr>
</tbody>
</table>
</details>

```grain
print: (value: a, ?suffix: String) => Void
```

Prints the given operand to the console. Works for any type. Internally, calls `toString`
on the operand, so a better representation of data type will be printed if those types
are provided from the module.

Parameters:

| param     | type     | description                            |
| --------- | -------- | -------------------------------------- |
| `value`   | `a`      | The operand                            |
| `?suffix` | `String` | The string to print after the argument |