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Difference between Property and Field in C# 3.0+
... in several ways. For example:
class Person: IPerson
{
private string _name;
public string FirstName
{
get
{
return _name ?? string.Empty;
}
set
{
if (value == null)
throw new System.ArgumentNullException("v...
Merge 2 arrays of objects
..."lang", value: "German"}];
function mergeByProperty(arr1, arr2, prop) {
_.each(arr2, function(arr2obj) {
var arr1obj = _.find(arr1, function(arr1obj) {
return arr1obj[prop] === arr2obj[prop];
});
arr1obj ? _.extend(arr1obj, arr2obj) : arr1.push(arr2obj);
});
}
mergeByPropert...
How can I make the cursor turn to the wait cursor?
...ow level.
A typical use case can look like below:
private void button1_Click(object sender, EventArgs e)
{
try
{
this.Enabled = false;//optional, better target a panel or specific controls
this.UseWaitCursor = true;//from the Form/Window instance
...
How do I set a ViewModel on a window in XAML using DataContext property?
...MarkupExtension, IValueConverter where T : class, new() { private static T _converter; public override object ProvideValue(IServiceProvider serviceProvider) { return _converter ?? (_converter = new T()); } }
– Whazz
May 19 '18 at 22:30
...
What exactly does git's “rebase --preserve-merges” do (and why?)
...B --not $(git merge-base --all A B)
Replay the commits:
Create a branch B_new, on which to replay our commits.
Switch to B_new (i.e. "git checkout B_new")
Proceeding parents-before-children (--topo-order), replay each commit c in C on top of B_new:
If it's a non-merge commit, cherry-pick a...
Proper package naming for testing with the Go language
...s the code under test. The decision to use package myfunc or package myfunc_test in the test file depends on whether you want to perform white-box or black-box testing.
There's nothing wrong with using both methods in a project. For instance, you could have myfunc_whitebox_test.go and myfunx_blackb...
Are PHP Variables passed by value or by reference?
...;) to the argument name in the function definition.
<?php
function add_some_extra(&$string)
{
$string .= 'and something extra.';
}
$str = 'This is a string, ';
add_some_extra($str);
echo $str; // outputs 'This is a string, and something extra.'
?>
...
Differences between socket.io and websockets
...s) => {
console.error('express connection');
res.sendFile(path.join(__dirname, 'ws.html'));
});
app.ws('/', (s, req) => {
console.error('websocket connection');
for (var t = 0; t < 3; t++)
setTimeout(() => s.send('message from server', ()=>{}), 1000*t);
});
app.listen(3001...
What is this weird colon-member (“ : ”) syntax in the constructor?
...ring("Name")). It fits in with the constructor better than Foo(int num) : m_Count = 5. Not to mention that classes must be constructed at this point anyway, since it's initialized here. Foo(int num) : Bar = num, wouldn't compile right. It just seems weird seeing Foo(int num) : m_Count(num), since pr...
Insert picture into Excel cell [closed]
...ble click on the button in order to get to the VBA Code -->
Sub Button1_Click()
Dim filePathCell As Range
Dim imageLocationCell As Range
Dim filePath As String
Set filePathCell = Application.InputBox(Prompt:= _
"Please select the cell that contains the reference path to ...