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Handling a Menu Item Click Event - Android
...gn_out"
app:showAsAction="never" />
Then in MainActivity
override fun onCreateOptionsMenu(menu: Menu): Boolean {
// Inflate the menu; this adds items to the action bar if it is present.
menuInflater.inflate(R.menu.main, menu)
return true
}
This is onOptionsItemSelected function...
Pick a random value from an enum?
...otlin Solution
MyEnum.values().random()
random() is a default extension function included in base Kotlin on the Collection object. Kotlin Documentation Link
If you'd like to simplify it with an extension function, try this:
inline fun <reified T : Enum<T>> random(): T = enumValues&l...
android on Text Change Listener
...
myTextField.addTextChangedListener(object : TextWatcher{
override fun afterTextChanged(s: Editable?) {}
override fun beforeTextChanged(s: CharSequence?, start: Int, count: Int, after: Int) {}
override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int)...
jQuery map vs. each
In jQuery, the map and each functions seem to do the same thing. Are there any practical differences between the two? When would you choose to use one instead of the other?
...
Python multiprocessing PicklingError: Can't pickle
...
Here is a list of what can be pickled. In particular, functions are only picklable if they are defined at the top-level of a module.
This piece of code:
import multiprocessing as mp
class Foo():
@staticmethod
def work(self):
pass
if __name__ == '__main__': ...
Is it Pythonic to use list comprehensions for just side effects?
Think about a function that I'm calling for its side effects, not return values (like printing to screen, updating GUI, printing to a file, etc.).
...
Detecting when user has dismissed the soft keyboard
...ow...
So I created a more neat solution with Kotlin
1.Create an extension function:
fun Activity.addKeyboardToggleListener(onKeyboardToggleAction: (shown: Boolean) -> Unit): KeyboardToggleListener? {
val root = findViewById<View>(android.R.id.content)
val listener = KeyboardToggl...
How to inspect the return value of a function in GDB?
Is it possible to inspect the return value of a function in gdb assuming the return value is not assigned to a variable?
...
convert ArrayList to JSONArray
...s
import com.google.gson.Gson
import com.google.gson.reflect.TypeToken
fun <T> Gson.convertToJsonString(t: T): String {
return toJson(t).toString()
}
fun <T> Gson.convertToModel(jsonString: String, cls: Class<T>): T? {
return try {
fromJson(jsonString, cls)
...
Are global variables in PHP considered bad practice? If so, why?
...ins the system configuration, and when I nead to access this variable in a function, I do global $var; .
6 Answers
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