Iterate - Revision history

40166222 at 16:34, 18 July 2018

2018-07-18T16:34:47Z

← Older revision		Revision as of 16:34, 18 July 2018
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	<pre class="def"><nowiki>		<pre class="def"><nowiki>
	let cursor = db.world.find({continent: "South America"});		let cursor = db.world.find({continent: "South America"});
	cursor.forEach(printjson);		cursor.forEach(printjson);</nowiki></pre>
	</~~pre~~></~~nowiki~~>
	</div>		</div>

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	<div class="q nonum" data-lang="mongo">		<div class="q nonum" data-lang="mongo">
	<p class="strong">Find the 3rd result of the previous example.</p>		<p class="strong">Find the 3rd result of the previous example.</p>
	<pre class=def>		<pre class="def"><nowiki>
	db.world.find({continent:"South America"}).toArray()[3]		db.world.find({continent:"South America"}).toArray()[3];</nowiki></pre>
	</pre>
	</div>		</div>

40166222 at 16:33, 18 July 2018

2018-07-18T16:33:48Z

← Older revision		Revision as of 16:33, 18 July 2018
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	<div class="q nonum" data-lang="mongo">		<div class="q nonum" data-lang="mongo">
	<p class="strong">Iterating countries in South America stored in the 'world' collection.</p>		<p class="strong">Iterating countries in South America stored in the 'world' collection.</p>
	<pre class="def ~~nonum~~"><nowiki>		<pre class="def"><nowiki>
	let cursor = db.world.find({continent: "South America"});		let cursor = db.world.find({continent: "South America"});
	while (cursor.hasNext()) {		while (cursor.hasNext()) {
Line 11:		Line 11:

	<div class="q nonum" data-lang="mongo">		<div class="q nonum" data-lang="mongo">
	<pre class=def>		<pre class="def"><nowiki>
	let cursor = db.world.find({continent:"South America"})		let cursor = db.world.find({continent: "South America"});
	cursor.forEach(printjson);		cursor.forEach(printjson);
	</pre>		</pre></nowiki>
	</div>		</div>

40166222 at 16:33, 18 July 2018

2018-07-18T16:33:16Z

← Older revision		Revision as of 16:33, 18 July 2018
Line 3:		Line 3:
	<div class="q nonum" data-lang="mongo">		<div class="q nonum" data-lang="mongo">
	<p class="strong">Iterating countries in South America stored in the 'world' collection.</p>		<p class="strong">Iterating countries in South America stored in the 'world' collection.</p>
	<pre class=def>		<pre class="def nonum"><nowiki>
	let cursor = db.world.find({continent:"South America"})		let cursor = db.world.find({continent: "South America"});
	while (cursor.hasNext()) {		while (cursor.hasNext()) {
	printjson(cursor.next());		printjson(cursor.next());
	}		}</nowiki></pre>
	</pre>
	</div>		</div>

40166222 at 23:43, 8 April 2018

2018-04-08T23:43:58Z

← Older revision		Revision as of 23:43, 8 April 2018
Line 18:		Line 18:
	</div>		</div>

	Cursors can also be used to find the '''n'''th record in a result as an alternative to <code>.find().skip(n).limit(1)</code>		Cursors can also be converted to other JavaScript collection types, such as arrays.<br/>
			In the following example an array is used to find the '''n'''th record in a result as an alternative to <code>.find().skip(n).limit(1)</code>
	<div class="q nonum" data-lang="mongo">		<div class="q nonum" data-lang="mongo">
	<p class="strong">Find the 3rd result of the previous example.</p>		<p class="strong">Find the 3rd result of the previous example.</p>

40166222: Created page with "{{TopTenTips}} MongoDB's `find()` method returns a cursor object which can be iterated using `while`, `hasNext()` and `next`, or by..."

2018-04-08T23:34:56Z

Created page with "{{TopTenTips}} MongoDB's <code>find()</code> method returns a cursor object which can be iterated using <code>while</code>, <code>hasNext()</code> and <code>next</code>, or by..."

New page

{{TopTenTips}}
MongoDB's <code>find()</code> method returns a cursor object which can be iterated using <code>while</code>, <code>hasNext()</code> and <code>next</code>, or by using <code>forEach()</code>.<div style="min-height:25em"></div>
<div class="q nonum" data-lang="mongo">
<p class="strong">Iterating countries in South America stored in the 'world' collection.</p>
<pre class=def>
let cursor = db.world.find({continent:"South America"})
while (cursor.hasNext()) {
printjson(cursor.next());
}
</pre>
</div>

<div class="q nonum" data-lang="mongo">
<pre class=def>
let cursor = db.world.find({continent:"South America"})
cursor.forEach(printjson);
</pre>
</div>

Cursors can also be used to find the '''n'''th record in a result as an alternative to <code>.find().skip(n).limit(1)</code>
<div class="q nonum" data-lang="mongo">
<p class="strong">Find the 3rd result of the previous example.</p>
<pre class=def>
db.world.find({continent:"South America"}).toArray()[3]
</pre>
</div>

Iterate - Revision history

40166222 at 16:34, 18 July 2018

40166222 at 16:33, 18 July 2018

40166222 at 16:33, 18 July 2018

40166222 at 23:43, 8 April 2018

40166222: Created page with "{{TopTenTips}} MongoDB's find() method returns a cursor object which can be iterated using while, hasNext() and next, or by..."

40166222: Created page with "{{TopTenTips}} MongoDB's `find()` method returns a cursor object which can be iterated using `while`, `hasNext()` and `next`, or by..."