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What is “Argument-Dependent Lookup” (aka ADL, or “Koenig Lookup”)?
...s how unqualified names are looked up by the compiler in C++.
The C++11 standard § 3.4.2/1 states:
When the postfix-expression in a function call (5.2.2) is an unqualified-id, other namespaces not considered during the usual unqualified lookup (3.4.1) may be searched, and in those namespaces, ...
Can Python print a function definition?
...cts that are imported (not objects defined within the interactive prompt). And of course it will only work if Python can find the source code (so not on built-in objects, C libs, .pyc files, etc)
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How to change menu item text dynamically in Android
..., calling this from anywhere in your Activity,
invalidateOptionsMenu();
and then overriding:
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
MenuItem item = menu.findItem(R.id.bedSwitch);
if (item.getTitle().equals("Set to 'In bed'")) {
item.setTitle("Set to 'Out of bed'...
Unsubscribe anonymous method in C#
...or me because the desired behavior was to unsubscribe after the event was handled.
Example:
MyEventHandler foo = null;
foo = delegate(object s, MyEventArgs ev)
{
Console.WriteLine("I did it!");
MyEvent -= foo;
};
MyEvent += foo;
...
TypeScript Objects as Dictionary types as in C#
...tential gotchas with this approach, the big one being that there's no safe and easy way to iterate through all the members. This code, for instance, shows that map contains two members: (<any>Object.prototype).something = function(){}; class Customer{} var map: { [email: string]: Custo...
How to use enums in C++
...== Days.Saturday)
Because Days is not a scope, nor object. It is a type. And Types themselves don't have members. What you wrote is the equivalent to std::string.clear. std::string is a type, so you can't use . on it. You use . on an instance of a class.
Unfortunately, enums are magical and so ...
How to check if hex color is “too black”?
...e darkness of a color chosen by a color picker to see if it's "too black", and if so, set it to white. I thought I could use the first characters of the hex value to pull this off. It's working, but it's switching some legitimately "light" colors too.
...
implements Closeable or implements AutoCloseable
I'm in the process of learning Java and I cannot find any good explanation on the implements Closeable and the implements AutoCloseable interfaces.
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Adding a newline into a string in C#
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@Alexander I'd say that string operations being inefficient is a problem we don't have to worry anymore in 2019.
– Filipe Madureira
Dec 4 '19 at 12:54
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How do you bind an Enum to a DropDownList control in ASP.NET?
...
I probably wouldn't bind the data as it's an enum, and it won't change after compile time (unless I'm having one of those stoopid moments).
Better just to iterate through the enum:
Dim itemValues As Array = System.Enum.GetValues(GetType(Response))
Dim itemNames As Array...