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| author | s-ol <s-ol@users.noreply.github.com> | 2020-06-03 10:50:20 +0000 |
|---|---|---|
| committer | s-ol <s+removethis@s-ol.nu> | 2025-03-02 14:24:49 +0000 |
| commit | 2a7d979226e98617623b550f207cec0e113ff04d (patch) | |
| tree | 0e9f2d2c36897af3a2569f287296928ba3bb9cf3 /docs/guide/basic-types.md | |
| parent | add loop/recur (diff) | |
| download | alive-2a7d979226e98617623b550f207cec0e113ff04d.tar.gz alive-2a7d979226e98617623b550f207cec0e113ff04d.zip | |
split guide into guide and reference
Diffstat (limited to 'docs/guide/basic-types.md')
| -rw-r--r-- | docs/guide/basic-types.md | 59 |
1 files changed, 0 insertions, 59 deletions
diff --git a/docs/guide/basic-types.md b/docs/guide/basic-types.md deleted file mode 100644 index c22929c..0000000 --- a/docs/guide/basic-types.md +++ /dev/null @@ -1,59 +0,0 @@ -Strings can be written in two ways: using double quotes (`"`), as we did above, -or using single quotes (`'`). In both types of strings, you can escape a quote -that otherwise would signify the end of the string by adding a single backslash -before it. Consequently, backslashes also have to be escaped in the same way. -The following are all valid strings: - - "hello world" - 'hello world' - "it's a beautiful day" - 'it\'s a beautiful day' - "this is a backslash: \\" - "this is a double quote: \"" - "" - '' - -Aside from strings, there are two more types of values that you can use when -writing alv programs: numbers and booleans. Numbers use the digits 0-9 and -can be integers, contain a decimal point, or start or end with a decimal point. -Numbers can start with a negetive sign. The following are all valid numbers: - - 0 - 12 - -7 - 0.1 - 10. - .1 - 123. - -There are only two boolean values, `true` and `false`: - - true - false - -The operator [print][], that we have been using above, only works on strings, -but there is a similar operator called [trace][] that can be used to inspect -any kind of value. It prints the value itself alongside more information, such -as the values type. Give it a try: - - (trace "hello") - (trace 2) - (trace true) - -This will print the following: - - changes to files: values.alv - trace "hello": <str= "hello"> - trace 2: <num= 2> - trace true: <bool= true> - -On the left side of the colon, [trace][] prints the expression that it is -evaluating. On the right side, three pieces of information are shown: - -- the *type*: `str`, `num`, `bool` -- the *value* itself: `"hello"`, `2`, `true` -- the *kind* of the result: `=` - -`=` means that these values are *constant* - they will not change by themselves -until the code is changed. For simple values like these that seems obvious, but -in `alv` we can also create values tha change over time, as we will see soon. |
