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What are Runtime.getRuntime().totalMemory() and freeMemory()?
...
According to the API
totalMemory()
Returns the total amount of memory in the Java virtual machine. The value returned by this method may vary over time, depending on the host environment.
Note that the amount of memory required to hold an ...
Appending an element to the end of a list in Scala
...rformance characteristics section in scala-lang.org/docu/files/collections-api/collections.html
– Arjan Blokzijl
Oct 17 '11 at 14:12
29
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What is the use for Task.FromResult in C#
... own implementation of the IHttpActionResult interface to be used in a Web Api Action. The ExecuteAsync method is expected to be asynchronous but you don't have to use the async keyword to make it asynchronous and awaitable. Since you already have the result and don't need to await anything it's be...
Difference between “change” and “input” event for an `input` element
...is.tagName + " | " + this.value);
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="text" />
<select>
<option>Alice</option>
<option>Bob</option>
<option>Carol</option>
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What's the best UML diagramming tool? [closed]
...IDE plugins available for Visual Studio, Eclipse & others), automation API - the list goes on.
Oh yeah, don't forget support for source control directly from inside the tool (SVN, CVS, TFS & SCC).
I would also stay away from Visio - you only get diagrams, not a model. Rename a class in on...
How can I output a UTF-8 CSV in PHP that Excel will read properly?
...a look at adding League\Csv to your requires. League\Csv has a really nice API for building CSV files.
To use League\Csv with this method of creating CSV files, check out this example
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How to print a query string with parameter values when using Hibernate
...;
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<...
Eager load polymorphic
...ions are only supported by preload. It's in the documentation here: http://api.rubyonrails.org/v5.1/classes/ActiveRecord/EagerLoadPolymorphicError.html
So always use preload for polymorphic associations. There is one caveat for this: you cannot query the polymorphic assocition in where clauses (whi...
What does jQuery.fn mean?
...ery.fn = jQuery.prototype = {
//list of functions available to the jQuery api
}
But the real tool behind fn is its availability to hook your own functionality into jQuery. Remember that jquery will be the parent scope to your function, so this will refer to the jquery object.
$.fn.myExtension = ...
How to perform OR condition in django queryset?
...Update 2019-06-20: This is now fully documented in the Django 2.1 QuerySet API reference. More historic discussion can be found in DjangoProject ticket #21333.
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