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How to set the thumbnail image on HTML5 video?
...reload="metadata">
<source src="https://www.w3schools.com/html/mov_bbb.mp4#t=0.5" type="video/mp4">
</video>
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How to use HTML Agility pack
...ith help from this XPath documentation: https://www.w3schools.com/xml/xpath_syntax.asp
To parse
<h2>
<a href="">Jack</a>
</h2>
<ul>
<li class="tel">
<a href="">81 75 53 60</a>
</li>
</ul>
<h2>
<a href="">Roy</a&...
How to pass a function as a parameter in Java? [duplicate]
...u have a class or interface with only a single abstract method (sometimes called a SAM type), for example:
public interface MyInterface {
String doSomething(int param1, String param2);
}
then anywhere where MyInterface is used, you can substitute a lambda expression:
class MyClass {
publ...
Return XML from a controller's action in as an ActionResult?
...aled class XmlActionResult : ActionResult
{
private readonly XDocument _document;
public Formatting Formatting { get; set; }
public string MimeType { get; set; }
public XmlActionResult(XDocument document)
{
if (document == null)
throw new ArgumentNullExcepti...
What's the difference between parenthesis $() and curly bracket ${} syntax in Makefile?
... like unomadh GNU make example.
From the GNU make manual on the Function Call Syntax (emphasis mine):
[…] If the arguments themselves contain other function calls or variable references, it is wisest to use the same kind of delimiters for all the references; write $(subst a,b,$(x)), not $(sub...
SQLite DateTime comparison
...e a few datetime functions. Follow the string representation formats (actually only formats 1-10) understood by those functions (storing the value as a string) and then you can use them, plus lexicographical comparison on the strings will match datetime comparison (as long as you don't try to compa...
How to get nice formatting in the Rails console
...he y method is a handy way to get some pretty YAML output.
y ProductColor.all
Assuming you are in script/console
As jordanpg commented, this answer is outdated. For Rails 3.2+ you need to execute the following code before you can get the y method to work:
YAML::ENGINE.yamler = 'syck'
From rub...
Defining custom attrs
... to use an attr in more than one place I put it in the root element. Note, all attributes share the same global namespace. That means that even if you create a new attribute inside of a <declare-styleable> element it can be used outside of it and you cannot create another attribute with the sa...
Setting different color for each series in scatter plot on matplotlib
...
I don't know what you mean by 'manually'. You can choose a colourmap and make a colour array easily enough:
import numpy as np
import matplotlib.pyplot as plt
import matplotlib.cm as cm
x = np.arange(10)
ys = [i+x+(i*x)**2 for i in range(10)]
colors = cm.ra...
Difference between fmt.Println() and println() in Go
...
println is an built-in function (into the runtime) which may eventually be removed, while the fmt package is in the standard library, which will persist. See the spec on that topic.
For language developers it is handy to have a println without dependencies, but the way to go is to use the f...