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What is the difference between trie and radix trie data structures?
...ree (or radix tree) you store whole words.
Now, assume you have the words hello, hat and have. To store them in a trie, it would look like:
e - l - l - o
/
h - a - t
\
v - e
And you need nine nodes. I have placed the letters in the nodes, but in fact they label the edges.
In ...
When should I use Arrow functions in ECMAScript 6?
...is.text = text;
};
// Throws "TypeError: Message is not a constructor"
var helloMessage = new Message('Hello World!');
Callback with dynamic context
Arrow function binds the context statically on declaration and is not possible to make it dynamic. Attaching event listeners to DOM elements is a co...
Concurrent vs serial queues in GCD
...c { // stop the main queue and wait for the following to finish
print("hello world") // this will never execute on the main queue because we just stopped it
}
// deadlock
One last thing to mention is resources. When we give a queue a task, GCD finds an available queue from its internally-manag...
Further understanding setRetainInstance(true)
...reate()");
TextView tv = new TextView(this);
tv.setText("Hello world");
setContentView(tv);
if (getFragmentManager().findFragmentByTag("test_fragment") == null)
{
Log.d(TAG, this + ": Existing fragment not found.");
FragmentTransacti...
Unicode equivalents for \w and \b in Java regular expressions?
...n" (usually: underscore). That way, a regex like \w+ matches words like hello , élève , GOÄ_432 or gefräßig .
3...
How can you make a custom keyboard in Android?
...here is nothing else special here. I will just leave the MainActivity and "Hello World!" layout as it is.
2. Add the layout files
Add the following two files to your app's res/layout folder:
keyboard_view.xml
key_preview.xml
keyboard_view.xml
This view is like a container that will hold our k...
The static keyword and its various uses in C++
...ly one per class]
locations as code:
static std::string namespaceScope = "Hello";
void foo() {
static std::string functionScope= "World";
}
struct A {
static std::string classScope = "!";
};
Before any function in a translation unit is executed (possibly after main began execution), the var...
How does the “this” keyword work?
...in Javascript:
function Person (name) {
this.name = name;
this.sayHello = function () {
console.log ("Hello", this);
}
}
var awal = new Person("Awal");
awal.sayHello();
// In `awal.sayHello`, `this` contains the reference to the variable `awal`
How does this work? Well, let's...
How do I safely pass objects, especially STL objects, to and from a DLL?
... mangling, exactly as expected.
pod<std::wstring> message = TEXT("Hello world!");
CCDLL_lib->ShowMessage(&message);
FreeLibrary(ccdll); //unload the library when we're done with it
return 0;
}
And here are the results. Our DLL works. We've successfully reached past STL ABI...
How to programmatically create and read WEP/EAP WiFi configurations in Android?
... out = new BufferedWriter(gpxwriter);
out.write("Hello world");
//out.close();
}
} catch (IOException e)
{
Toast toast = Toast.makeText(this, "Problem reading SD CARD", 3000);
Toast toast2 = Toast.makeText...