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| -rw-r--r-- | lessons/src/lesson004_ints/code.gleam | 5 | ||||
| -rw-r--r-- | lessons/src/lesson004_ints/text.html | 13 | ||||
| -rw-r--r-- | lessons/src/lesson005_floats/code.gleam | 20 | ||||
| -rw-r--r-- | lessons/src/lesson005_floats/text.html | 19 | ||||
| -rw-r--r-- | lessons/src/lesson006_number_formats/code.gleam | 16 | ||||
| -rw-r--r-- | lessons/src/lesson006_number_formats/text.html | 13 | ||||
| -rw-r--r-- | lessons/src/lesson007_strings/code.gleam | 17 | ||||
| -rw-r--r-- | lessons/src/lesson007_strings/text.html | 22 |
8 files changed, 125 insertions, 0 deletions
diff --git a/lessons/src/lesson004_ints/code.gleam b/lessons/src/lesson004_ints/code.gleam index fbead50..5076902 100644 --- a/lessons/src/lesson004_ints/code.gleam +++ b/lessons/src/lesson004_ints/code.gleam @@ -1,4 +1,5 @@ import gleam/io +import gleam/int pub fn main() { // Int arithmetic @@ -13,4 +14,8 @@ pub fn main() { io.debug(2 < 1) io.debug(2 >= 1) io.debug(2 <= 1) + + // Standard library int functions + io.debug(int.max(42, 77)) + io.debug(int.clamp(5, 10, 20)) } diff --git a/lessons/src/lesson004_ints/text.html b/lessons/src/lesson004_ints/text.html index f5222ee..32a7aa8 100644 --- a/lessons/src/lesson004_ints/text.html +++ b/lessons/src/lesson004_ints/text.html @@ -1,2 +1,15 @@ <p> + Gleam's <code>Int</code> type represents whole numbers. +</p> +<p> + There are arithmetic and comparison operators for ints. +</p> +<p> + When running on the Erlang virtual machine ints have no maximum and minimum + size. When running on JavaScript runtimes ints are represented using + JavaScript's 64 bit floating point numbers, +</p> +<p> + The <a href="https://hexdocs.pm/gleam_stdlib/gleam/int.html"><code>gleam/int</code></a> + standard library module contains functions for working with ints. </p> diff --git a/lessons/src/lesson005_floats/code.gleam b/lessons/src/lesson005_floats/code.gleam new file mode 100644 index 0000000..f42c608 --- /dev/null +++ b/lessons/src/lesson005_floats/code.gleam @@ -0,0 +1,20 @@ +import gleam/io +import gleam/float + +pub fn main() { + // Float arithmetic + io.debug(1.0 +. 1.5) + io.debug(5.0 -. 1.5) + io.debug(5.0 /. 2.5) + io.debug(3.0 *. 3.5) + + // Float comparisons + io.debug(2.2 >. 1.3) + io.debug(2.2 <. 1.3) + io.debug(2.2 >=. 1.3) + io.debug(2.2 <=. 1.3) + + // Standard library float functions + io.debug(float.max(2.0, 9.5)) + io.debug(float.ceiling(5.4)) +} diff --git a/lessons/src/lesson005_floats/text.html b/lessons/src/lesson005_floats/text.html new file mode 100644 index 0000000..497bb13 --- /dev/null +++ b/lessons/src/lesson005_floats/text.html @@ -0,0 +1,19 @@ +<p> + Gleam's <code>Float</code> type represents numbers that are not integers. +</p> +<p> + Unlike many languages Gleam does not have a `NaN` or `Infinity` float value. +</p> +<p> + Gleam's numerical operators are not overloaded, so there are dedictated + operators for working with floats. +</p> +<p> + Floats are represented as 64 bit floating point numbers on both Erlang and + JavaScript runtimes. +</p> +<p> + The <a href="https://hexdocs.pm/gleam_stdlib/gleam/float.html"><code>gleam/float</code></a> + standard library module contains functions for working with floats. +</p> + diff --git a/lessons/src/lesson006_number_formats/code.gleam b/lessons/src/lesson006_number_formats/code.gleam new file mode 100644 index 0000000..7307185 --- /dev/null +++ b/lessons/src/lesson006_number_formats/code.gleam @@ -0,0 +1,16 @@ +import gleam/io + +pub fn main() { + // Underscores + io.debug(1_000_000) + io.debug(10_000.01) + + // Binary, octal, and hex Int literals + io.debug(0b00001111) + io.debug(0o17) + io.debug(0xF) + + // Scientific notation Float literals + io.debug(7.0e7) + io.debug(3.0e-4) +} diff --git a/lessons/src/lesson006_number_formats/text.html b/lessons/src/lesson006_number_formats/text.html new file mode 100644 index 0000000..308219a --- /dev/null +++ b/lessons/src/lesson006_number_formats/text.html @@ -0,0 +1,13 @@ +<p> + Underscores can be added to numbers for clarity. For example, + <code>1000000</code> can be tricky to read quickly, while + <code>1_000_000</code> can be easier. +</p> +<p> + Ints can be written in binary, octal, or hexadecimal formats using the + <code>0b</code>, <code>0o</code>, and <code>0x</code> prefixes respectively. +</p> +<p> + Floats can be written in a scientific notation. +</p> + diff --git a/lessons/src/lesson007_strings/code.gleam b/lessons/src/lesson007_strings/code.gleam new file mode 100644 index 0000000..c57cf9b --- /dev/null +++ b/lessons/src/lesson007_strings/code.gleam @@ -0,0 +1,17 @@ +import gleam/io +import gleam/string + +pub fn main() { + // String literals + io.debug("๐ฉโ๐ป ใใใซใกใฏ Gleam ๐ณ๏ธโ๐") + io.debug( + "multi + line + string", + ) + io.debug("\u{1F600}") + + // String functions + io.debug(string.reverse("1 2 3 4 5")) + io.debug(string.append("abc", "def")) +} diff --git a/lessons/src/lesson007_strings/text.html b/lessons/src/lesson007_strings/text.html new file mode 100644 index 0000000..21cfc12 --- /dev/null +++ b/lessons/src/lesson007_strings/text.html @@ -0,0 +1,22 @@ +<p> + In Gleam Strings are written as text surrounded by double quotes. +</p> +<p> + They can span multiple lines and support unicode characters. +</p> +<p> + Several escape sequences are supported: +</p> +<ul> + <li><code>\"</code> - double quote</li> + <li><code>\\</code> - backslash</li> + <li><code>\f</code> - form feed</li> + <li><code>\n</code> - newline</li> + <li><code>\r</code> - carriage return</li> + <li><code>\t</code> - tab</li> + <li><code>\u{1F600}</code> - unicode codepoint</li> +</ul> +<p> + The <a href="https://hexdocs.pm/gleam_stdlib/gleam/string.html"><code>gleam/string</code></a> + standard library module contains functions for working with strings. +</p> |