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Understanding dict.copy() - shallow or deep?
...mple:
original = dict(a=1, b=2, c=dict(d=4, e=5))
new = original.copy()
Now let's change a value in the 'shallow' (first) level:
new['a'] = 10
# new = {'a': 10, 'b': 2, 'c': {'d': 4, 'e': 5}}
# original = {'a': 1, 'b': 2, 'c': {'d': 4, 'e': 5}}
# no change in original, since ['a'] is an immutabl...
Is there a way to create your own html tag in HTML5?
...s doctypes and schemas, HTML does not become invalid if a browser doesn't know a tag or two. Think of <marquee>. This has not been in the official standard. So while using it made your HTML page "officially unapproved", it didn't break the page either.
Then there is <keygen>, which was ...
Understanding spring @Configuration class
...ion Understanding Spring @Autowired usage I wanted to create a complete knowledge base for the other option of spring wiring, the @Configuration class.
...
Is System.nanoTime() completely useless?
...s System.nanoTime() returns the time value using a CPU specific counter. Now consider the following case I use to measure time of a call:
...
How can I find unused images and CSS styles in a website? [closed]
...>Audits->Remove unused CSS rules
Screenshot:
Update: 30 Jun, 2017
Now Chrome 59 provides CSS and JS code coverage. See https://developers.google.com/web/updates/2017/04/devtools-release-notes#coverage
share
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Nested or Inner Class in PHP
...(method_exists($this, $method)) {
/* The method exists so now we want to know if the
* caller is a child of our Package class. If not we throw an exception
* Note: This is a kind of a dirty way of finding out who's
* calling the me...
git: abort commit in the middle of typing message
...m in the middle of committing. I have typed up my commit message in vim. I now remembered I needed to change something. I realize that there are other options to accomplish what I want, but I want to know if there is a way to abort the commit but still save the commit message I've typed up so far.
...
How to get config parameters in Symfony2 Twig Templates
...onfig/config.yml
twig:
globals:
ga_tracking: "%ga_tracking%"
Now, the variable ga_tracking is available in all Twig templates:
<p>The google tracking code is: {{ ga_tracking }}</p>
The parameter is also available inside the controllers:
$this->container->getParame...
Practical use of `stackalloc` keyword
...only be stored into a pointer local variable. As of C# 7.2, stackalloc can now be used as part of an expression and can target a span, and that can be done without using the unsafe keyword. Thus, instead of writing
Span<byte> bytes;
unsafe
{
byte* tmp = stackalloc byte[length];
bytes = ne...
ASP.NET MVC partial views: input name prefixes
...r />
<input type="submit" value="Submit" />
</form>
Now this is complete. Set a breakpoint in the Create Post controller action to verify. Don't use this with lists however because it wont work. See my question on using EditorTemplates with IEnumerable for more on that.
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