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Why use ICollection and not IEnumerable or List on many-many/one-many relationships?
...;
namespace StackDemo
{
class Program
{
static void Main(string[] args)
{
List<Person> persons = new List<Person>();
persons.Add(new Person("John",30));
persons.Add(new Person("Jack", 27));
ICollection<Person&g...
Retrieve only the queried element in an object array in MongoDB collection
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this query only return the array "shapes" and it won't return other fields. Anyone knows how to return other fields also?
– Mark Thien
Jul 29 '16 at 0:24
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What does “SyntaxError: Missing parentheses in call to 'print'” mean in Python?
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In Python 3, you can only print as:
print("STRING")
But in Python 2, the parentheses are not necessary.
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How do I make an Android EditView 'Done' button and hide the keyboard when clicked?
When the user clicks on the EditView , Android opens the keyboard so that user can write in the EditView .
17 Answers
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DropDownList's SelectedIndexChanged event not firing
I have a DropDownList object in my web page. When I click on it and select a different value, nothing happens, even though I have a function wired up to the SelectedIndexChanged event.
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Traits in PHP – any real world examples/best practices? [closed]
...it that contains different functions for different sorting types (numeric, string, date, etc). You can then use this trait not only in your product class (as given in the example), but also in other classes that need similar strategies (to apply a numeric sort to some data, etc).
Try it:
<?php
...
How to solve java.lang.NoClassDefFoundError?
...through one Simple Example :
public class ClassA{
public static void main(String args[]){
//Some gibberish Code...
String text = ClassB.getString();
System.out.println("Text is :" + text);
}
}
public class ClassB{
public static String getString(){
return "Testing Some Ex...
How to output in CLI during execution of PHP Unit tests?
...est to test output using the built-in methods like:
$this->expectOutputString('foo');
However, sometimes it's helpful to be naughty and see one-off/temporary debugging output from within your test cases. There is no need for the var_dump hack/workaround, though. This can easily be accomplished...
Convert UTC Epoch to local date
...ust it to the proper epoch, but the only method that seems useful is toUTCString() and strings don’t help me. If I pass that string into a new date, it should notice that it’s UTC, but it doesn’t.
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Simplest way to wait some asynchronous tasks complete, in Javascript?
...mongoose = require('mongoose');
mongoose.connect('your MongoDB connection string');
var conn = mongoose.connection;
var promises = ['aaa', 'bbb', 'ccc'].map(function(name) {
return new Promise(function(resolve, reject) {
var collection = conn.collection(name);
collection.drop(function(er...