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When to Redis? When to MongoDB? [closed]
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Redis. Let’s say you’ve written a site in php; for whatever reason, it becomes popular and it’s ahead of its time or has porno on it. You realize this php is so freaking slow, "I’m gonna lose my fans because they simply won’t wait 10 seconds for a page." You ha...
Submit form using a button outside the tag
...attribute. Basically
<form id="myform" method="get" action="something.php">
<input type="text" name="name" />
</form>
<input type="submit" form="myform" />
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im...
How do I show the schema of a table in a MySQL database?
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You can also use shorthand for describe as desc for table description.
desc [db_name.]table_name;
or
use db_name;
desc table_name;
You can also use explain for table description.
explain [db_name.]table_name;
See official doc
Will give output like:
+--------...
What are five things you hate about your favorite language? [closed]
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PHP:
1) Forces me to make unnecessary variables:
$parts = explode('|', $string);
$first = $parts[0];
2) An implementation of lambdas so lame it is roughly equivalent to using eval() and so hideously wrong I have never use...
Swift: #warning equivalent
...upport is available for both build warnings and errors.
#warning("Warning description")
#error("Throws a build error")
Original Answer
Quick, dirty, and oh so elegantly simple all at the same time.
// Description of what you need to fix
var FIX_ME__????????????: AnyObject
Throws a warning th...
In Docker, what's the difference between a container and an image? [duplicate]
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The glossary description makes sense, but in no way I can relate the following definition from the docker tutorial to that: A container is a stripped-to-basics version of a Linux operating system. An image is software you load into a cont...
How can I upload files asynchronously?
... $.ajax({
// Your server script to process the upload
url: 'upload.php',
type: 'POST',
// Form data
data: new FormData($('form')[0]),
// Tell jQuery not to process data or worry about content-type
// You *must* include these options!
cache: false,
contentType: f...
Clear the cache in JavaScript
...ry hour, or every week, you may cache according to file data.
Example (in PHP):
<script src="js/my_script.js?v=<?=md5_file('js/my_script.js')?>"></script>
or even use file modification time:
<script src="js/my_script.js?v=<?=filemtime('js/my_script.js')?>"></scr...
How are feature_importances in RandomForestClassifier determined?
...ative ways to compute feature importance values in decision trees. A brief description of the above method can be found in "Elements of Statistical Learning" by Trevor Hastie, Robert Tibshirani, and Jerome Friedman.
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Why is  appearing in my HTML? [duplicate]
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Try:
<?php
// Tell me the root folder path.
// You can also try this one
// $HOME = $_SERVER["DOCUMENT_ROOT"];
// Or this
// dirname(__FILE__)
$HOME = dirname(__FILE__);
// Is this a Windows host ? If it is, change this line to $W...