pxt-calliope/docs/reference/types/string.md

46 lines
1.3 KiB
Markdown
Raw Normal View History

2016-03-26 00:47:20 +01:00
# String
2016-04-02 01:22:47 +02:00
a piece of text.
2016-03-26 00:47:20 +01:00
### @parent blocks/language
A *String* is a sequence of characters. For the @boardname@, ASCII character codes 32 to 126 are supported; letters, digits, punctuation marks, and a few symbols. All other character codes appear as a ? on the [LED screen](/device/screen).
2016-03-26 00:47:20 +01:00
### Create a string variable
2016-03-26 00:47:20 +01:00
```block
let salutation = "Hello";
```
2016-03-26 00:47:20 +01:00
To create a variable that holds a string:
2016-03-26 00:47:20 +01:00
1. Click `Variables` (in the Block drawer).
2016-03-26 00:47:20 +01:00
2. Type a name for your new string variable by clicking the down arrow, then click New Variable. Then type the variable name "salutation"
2. Drag a string block on the right side of the operator.
3. Click `"Hello"` and then type a string like `hello`.
Your code should look something like this:
```block
let salutation = "Hello";
```
2016-03-26 00:47:20 +01:00
### The function `show string`
Use [show string](/reference/basic/show-string) to display a string on the [LED screen](/device/screen).
2016-11-02 01:44:37 +01:00
If the string is multiple characters, the string scrolls right to left. The following example displays `Hello world!` on the @boardname@ screen:
2016-03-26 00:47:20 +01:00
```block
basic.showString("Hello world!");
```
2016-03-26 00:47:20 +01:00
The parameter of `show string` specifies the string
### See also
[string functions](/reference/types/string-functions), [Number](/reference/types/number), [show string](/reference/basic/show-string)
2016-03-26 00:47:20 +01:00