Date range iterator

Signed-off-by: Alex Ivanov <ai@contributor.pw>

Author: contributorpw

…on_js/datesRangeIterator/appsscript.json …n_js/date-range-iterator/appsscript.jsonsnippets/common_js/datesRangeIterator/appsscript.json renamed to snippets/common_js/date-range-iterator/appsscript.json snippets/common_js/datesRangeIterator/appsscript.json renamed to snippets/common_js/date-range-iterator/appsscript.json

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+/* exported makeDatesRangeIterator */
+/**
+ *
+ * @param {Date} start
+ * @param {Date} end
+ * @param {number} step ms
+ */
+function* makeDatesRangeIterator_(start, end, step = 1000 * 60 * 60 * 24) {
+  const _start = new Date(start);
+  let _iterationCount = 0;
+  while (_start <= end) {
+    _iterationCount++;
+    yield _start;
+    _start.setTime(_start.getTime() + step);
+  }
+  return _iterationCount;
+}

…common_js/datesRangeIterator/config.json …ommon_js/date-range-iterator/config.jsonsnippets/common_js/datesRangeIterator/config.json renamed to snippets/common_js/date-range-iterator/config.json snippets/common_js/datesRangeIterator/config.json renamed to snippets/common_js/date-range-iterator/config.json

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+---
+title: 'Date range iterator'
+date: '2021-04-19'
+description: 'Gets an iterator of dates for the specified range.'
+tags: ['js', 'common']
+categories: ['snippets']
+images: ['./snippets/sheets/unlink_urls/screenrecord.gif']
+---
+
+{{< toc >}}
+
+## Date range iterator
+
+![Snippet of Date range iterator](./screenshot.png)
+
+### Snippet
+
+- {{< externalLink >}}
+- {{< commentLink >}}
+- {{< scrvizLink >}}
+
+{{< codeFromFile "index.js" >}}
+
+### Run it
+
+{{< codeFromFile "run.js" >}}

snippets/common_js/date-range-iterator/index.js

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+/* global makeDatesRangeIterator_ */
+
+/**
+ * Prints 100 days
+ */
+function runPrint100Days() {
+  const start = new Date();
+  const end = new Date();
+  end.setTime(start.getTime() + 1000 * 60 * 60 * 24 * 100);
+
+  const it = makeDatesRangeIterator_(start, end);
+  let result = it.next();
+  while (!result.done) {
+    console.log(result.value);
+    result = it.next();
+  }
+}
+
+/**
+ * Prints all mondays of the year
+ */
+function runPrintAllMondays() {
+  const year = 2023;
+  const start = new Date(year, 0, 1);
+  const end = new Date(year, 12, 0);
+  const step = 1000 * 60 * 60 * 24 * 7;
+
+  // Set the first monday
+  while (start.getDay() !== 1) start.setDate(start.getDate() + 1);
+
+  const it = makeDatesRangeIterator_(start, end, step);
+  let result = it.next();
+  while (!result.done) {
+    console.log(result.value);
+    result = it.next();
+  }
+}