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authorLouis Pilfold <louis@lpil.uk>2024-01-23 14:41:22 +0000
committerLouis Pilfold <louis@lpil.uk>2024-01-23 14:41:22 +0000
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parent2e5b4cb878569e56811f4f58facbe7aa60ab7327 (diff)
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Add equality lesson
Diffstat (limited to 'src/content/chapter0_basics/lesson15_constants')
-rw-r--r--src/content/chapter0_basics/lesson15_constants/code.gleam13
-rw-r--r--src/content/chapter0_basics/lesson15_constants/text.html18
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diff --git a/src/content/chapter0_basics/lesson15_constants/code.gleam b/src/content/chapter0_basics/lesson15_constants/code.gleam
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-import gleam/io
-
-const ints: List(Int) = [1, 2, 3]
-
-const floats = [1.0, 2.0, 3.0]
-
-pub fn main() {
- io.debug(ints)
- io.debug(ints == [1, 2, 3])
-
- io.debug(floats)
- io.debug(floats == [1.0, 2.0, 3.0])
-}
diff --git a/src/content/chapter0_basics/lesson15_constants/text.html b/src/content/chapter0_basics/lesson15_constants/text.html
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-<p>
- As well as let assignments Gleam also has constants, which are defined at the
- top level of a module.
-</p>
-<p>
- Constants must be literal values, functions cannot be used in their
- definitions.
-</p>
-<p>
- Constants may be useful for values that are used throughout your program,
- permitting them to be named and to ensure there are no differences in the
- definition between each use.
-</p>
-<p>
- Using a constant may be more efficient than creating the same value in
- multiple functions, though the exact performance characteristics will depend
- on the runtime and whether compiling to Erlang or JavaScript.
-</p>