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updated example for github.io site
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mark
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index.html
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index.html
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<!DOCTYPE html>
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<head>
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<meta charset=“UTF-8”>
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<link rel="stylesheet" href="external.css">
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<title>Mark :: mers</title>
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</head>
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<body>
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<h1>Mers</h1>
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<section class="container">
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<section class="container_left2 code-border">
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<pre><code class="mers-code-snippet">
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fn get_number_input(question string) {<br> println(question)<br> input = read_line()<br> // try to parse to an int, then a float.<br> in = match input {<br> input.parse_int() input<br> input.parse_float() input<br> }<br> // 'in' has type int/float/[] because of the match statement<br> switch! in {<br> int/float in<br> // replace [] with an appropriate error before returning<br> [] Err: "input was not a number."<br> }<br> // return type is int/float/Err(string)<br>}<br><br>answer = get_number_input("What is your favorite number?")<br><br>// switch can be used to branch based on a variables type.<br>// switch! indicates that every possible type must be handled.<br>switch! answer {<br> int {<br> println("Entered an integer")<br> answer.debug() // int<br> }<br> float {<br> println("Entered a decimal number")<br> answer.debug() // float<br> }<br> Err(string) println("Input was not a number!")<br>}<br><br>sleep(2)<br><br><br>// function that returns an anonymous function (function object).<br>// anonymous functions can be used as iterators in for-loops.<br>fn count_up() {<br> count = -1<br> () {<br> count = count.add(1)<br> count<br> }<br>}<br><br>for num count_up() {<br> println(num.to_string())<br> // once num is greater than 60,<br> // the loop stops and returns num.<br> if num.gt(60) num else []<br>}<br><br></code></pre>
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</section>
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<section class="container_right">
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<image
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alt="some picture related to mers (todo)"
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src="data:image/jpg;base64,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"
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width="100%" height="100%"
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>
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<h3>Mers types</h3>
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<div>
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Mers uses a multiple-types system.
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It keeps track of which types a variable could have
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and constructs a type with that information.
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<br>
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For example, <code>int/float</code> can represent a number - int or float.
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Optional types can be <code>[]/[t]</code> - either nothing or one value (tuple with length 0 or 1).
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Mers doesn't have null, it just has the empty tuple <code>[]</code>.
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</div>
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<h3>No exceptions, no crashes</h3>
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<div>
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Errors in mers are passed as values.
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Because of the type system, you are forced to handle them explicitly.
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Mers will not crash in unexpected places, because the only way to crash
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it is by using one of the assume*() functions (similar to unwrap()s).
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</div>
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</section>
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</section>
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<hr>
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<h3>HTML preprocessor to help build this document written in mers:</h3>
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<section class="container">
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<pre class="container2_left"><code>
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<!DOCTYPE html><br># This document will be processed by build.mers.<br># Lines starting with hashtags are comments and will be ignored.<br># Lines starting with dollar-signs insert special text.<br># To escape this, put a space before the hashtag or dollar sign.<br><head><br> <meta charset=“UTF-8”><br> <link rel="stylesheet" href="external.css"><br> <title>Mark :: mers</title><br></head><br><body><br> <h1>Mers</h1><br> <section class="container"><br> <section class="container_left2 code-border"><br> <pre><code class="mers-code-snippet"><br>$welcome_script<br> </code></pre><br> </section><br> <section class="container_right"><br> <image<br> alt="some picture related to mers (todo)"<br> src="data:image/jpg;base64,/9j/4AAQSkZJRgABAQEASABIAAD/2wBDAP//////<br> width="100%" height="100%"<br> ><br> <h3>Mers types</h3><br> <div><br> Mers uses a multiple-types system.<br> It keeps track of which types a variable could have<br> and constructs a type with that information.<br> <br><br> For example, <code>int/float</code> can represent a number - int or<br> Optional types can be <code>[]/[t]</code> - either nothing or one v<br> Mers doesn't have null, it just has the empty tuple <code>[]</code><br> </div><br> <h3>No exceptions, no crashes</h3><br> <div><br> Errors in mers are passed as values.<br> Because of the type system, you are forced to handle them explicitl<br> Mers will not crash in unexpected places, because the only way to c<br> it is by using one of the assume*() functions (similar to unwrap()s<br> </div><br> </section><br> </section><br> <hr><br> <h3>HTML preprocessor to help build this document written in mers:</h3><br> <section class="container"><br> <pre class="container2_left"><code><br>$index.html<br> </code></pre><br> <pre class="container2_right"><code class="mers-code-snippet"><br>$build_script<br> </code></pre><br> </section><br></body><br><br></code></pre>
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<pre class="container2_right"><code class="mers-code-snippet">
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#!/usr/bin/env mers<br><br>// helper functions<br><br>fn read_string(path string) {<br> bytes_to_string(fs_read(path).assume_no_enum()).assume_no_enum()<br>}<br>fn code_to_html(code string code_width_limit_chars int) {<br> out = ""<br> for line code.regex(".*").assume_no_enum() {<br> if code_width_limit_chars.gtoe(0).and(line.len().gt(code_width_limit_chars)) {<br> line = line.substring(0 code_width_limit_chars)<br> }<br> line = line<br> .replace("&" "&amp;")<br> .replace("<" "&lt;")<br> .replace(">" "&gt;")<br> out = out.add(line.add("<br>"))<br> }<br> out<br>}<br><br>// data<br><br>index = read_string("index.html")<br><br>index_html = index.code_to_html(75)<br>build_script = read_string("build.mers").code_to_html(-1)<br>welcome_script = read_string("welcome.mers").code_to_html(-1)<br><br>// process index.html<br><br>out = ""<br>for line index.regex("\\S*.*").assume_no_enum() {<br> if line.starts_with("#") {<br> // comment, ignore<br> } else if line.starts_with("$") {<br> if line.eq("$welcome_script") {<br> out = out.add(welcome_script)<br> } else if line.eq("$build_script") {<br> out = out.add(build_script)<br> } else if line.eq("$index.html") {<br> out = out.add(index_html)<br> }<br> } else {<br> // remove spaces<br> loop {<br> if line.starts_with(" ") {<br> line = line.substring(1)<br> } else {<br> true // break<br> }<br> }<br> out = out.add(line.add("\n"))<br> }<br>}<br><br>fs_write("../index.html" string_to_bytes(out)).assume_no_enum()<br><br></code></pre>
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</section>
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</body>
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@ -17,36 +17,37 @@ fn get_number_input(question string) {
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answer = get_number_input("What is your favorite number?")
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answer.debug() // type: int/float/Err(string)
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// switch can be used to branch based on a variables type.
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// switch! indicates that every possible type must be handled.
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switch! answer {
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int {
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println("Entered an integer")
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answer.debug() // int
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answer.debug() // type: int
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}
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float {
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println("Entered a decimal number")
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answer.debug() // float
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answer.debug() // type: float
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}
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Err(string) println("Input was not a number!")
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}
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sleep(2)
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// wait one second
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sleep(1)
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// function that returns an anonymous function (function object).
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// anonymous functions can be used as iterators in for-loops.
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fn count_up() {
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count = -1
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fn square_numbers() {
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i = 0
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() {
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count = count.add(1)
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count
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i = i + 1
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i * i
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}
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}
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for num count_up() {
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for num square_numbers() {
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println(num.to_string())
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// once num is greater than 60,
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// the loop stops and returns num.
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if num.gt(60) num else []
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}
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// once num is greater than 60, the loop stops.
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num.gt(50)
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}
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