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How do I check CPU and Memory Usage in Java?
... Runtime.getRuntime();
NumberFormat format = NumberFormat.getInstance();
StringBuilder sb = new StringBuilder();
long maxMemory = runtime.maxMemory();
long allocatedMemory = runtime.totalMemory();
long freeMemory = runtime.freeMemory();
sb.append("free memory: " + format.format(freeMemory / 1024)...
What is an optional value in Swift?
...or no value. Optionals are written by appending a ? to any type:
var name: String? = "Bertie"
Optionals (along with Generics) are one of the most difficult Swift concepts to understand. Because of how they are written and used, it's easy to get a wrong idea of what they are. Compare the optional ab...
Serializing PHP object to JSON
...ertyGetters = array();
/**
* @param mixed $object
* @return string|false
*/
public function serialize($object)
{
return json_encode($this->serializeInternal($object));
}
/**
* @param $object
* @return array
*/
private function serial...
How to strike through obliquely with css
...e a border, then rotate it with a CSS transform. Doing it this way adds no extra elements to the DOM, and adding/removing the strikethrough is a simple as adding/removing the class.
Here's a demo
Caveats
This will only work down to IE8. IE7 does not support :before, however will degrade graceful...
mongoose vs mongodb (nodejs modules/extensions), which better? and why?
...mething like mongooseInstace.model('MyCollection', { "_id": Number, "xyz": String }) it's better to do (even though the collection name is really MyCollection): mongooseInstace.model('mycollection', { "_id": Number, "xyz": String })
But honestly, it's really useful. The biggest issue is the docume...
Check if a given key already exists in a dictionary
...
this also avoids an extra allocation. (important for making tight loops a bit faster)
– nurettin
Dec 9 '18 at 9:19
add a...
How to manually trigger validation with jQuery validate?
...r unobtrusive validation only for this element if in place
// add your extra logic here to execute only when element is valid
}
Note that validate() needs to be called on the form before checking it using this method.
Documentation link:
https://jqueryvalidation.org/valid/
...
How to determine equality for two JavaScript objects?
...
If the object(s) can be converted to a JSON string, then it makes an equals() function simple.
– scotts
Nov 14 '12 at 18:28
3
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Unknown provider: $modalProvider
...
Just an extra side note for an issue I also experienced today:
I had a similar error "Unknown provider: $aProvider" when I turned on minification/uglify of my source code.
As mentioned in the Angular docs tutorial (paragraph: "A No...
What is the difference between ApplicationContext and WebApplicationContext in Spring MVC?
...ationContext is an extension of the plain ApplicationContext that has some extra features necessary for web applications. It differs from a normal ApplicationContext in that it is capable of resolving themes (see Using themes), and that it knows which Servlet it is associated with (by having a link ...