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How to get awaitable Thread.Sleep?
...sting starting a new thread are a bad idea - there's no need to do that at all. Part of the point of async/await is to reduce the number of threads your application needs.
You should instead use Task.Delay which doesn't require a new thread, and was designed precisely for this purpose:
// Executio...
ORA-00979 not a group by expression
...
You must put all columns of the SELECT in the GROUP BY or use functions on them which compress the results to a single value (like MIN, MAX or SUM).
A simple example to understand why this happens: Imagine you have a database like this:
...
Using C# reflection to call a constructor
...{
public Addition(int a)
{
Console.WriteLine("Constructor called, a={0}", a);
}
}
class Test
{
static void Main()
{
Type type = typeof(Addition);
ConstructorInfo ctor = type.GetConstructor(new[] { typeof(int) });
object instance = ctor.Invoke(new ...
Android: how to check if a View inside of ScrollView is visible?
...it is always returning false. Please let me know
– KK_07k11A0585
Jun 15 '15 at 14:57
2
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Redo merge of just a single file
...m in the middle of a large merge, and I've used git mergetool to resolve all the conflicts, but I have not committed yet, as I wanted to make sure the merge was ok first.
...
$http get parameters does not work
...
The 2nd parameter in the get call is a config object. You want something like this:
$http
.get('accept.php', {
params: {
source: link,
category_id: category
}
})
.success(function (data,status) {
...
Java 8: Where is TriFunction (and kin) in java.util.function? Or what is the alternative?
...ctive function are, you
can handle now infinite arguments, which is especially convenient for streams, and you can just leave arguments open.
So if you again want to see what would the result be like if x := 1 and y := 1 , y := 2 , y := 3 , you can say h = g(1) and
h(1) is the result for y := 1, h...
google chrome extension :: console.log() from background page?
If I call console.log('something'); from the popup page, or any script included off that it works fine.
11 Answers
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Linq list of lists to single list
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Use SelectMany
var all = residences.SelectMany(x => x.AppForm_Residences);
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Find the extension of a filename in Ruby
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That's really basic stuff:
irb(main):002:0> accepted_formats = [".txt", ".pdf"]
=> [".txt", ".pdf"]
irb(main):003:0> File.extname("example.pdf") # get the extension
=> ".pdf"
irb(main):004:0> accepted_formats.include? ...