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Is there some way to PUSH data from web server to browser?
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Yes, what you're looking for is COMET http://en.wikipedia.org/wiki/Comet_(programming). Other good Google terms to search for are AJAX-push and reverse-ajax.
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What's the point of map in Haskell, when there is fmap?
... the GHC.Base source code, the map function is implemented as follows
map _ [] = []
map f (x:xs) = f x : map f xs
which makes use of pattern matching to pull the head (the x) off the tail (the xs) of the list, then constructs a new list by using the : (cons) value constructor so to prepend f ...
What are file descriptors, explained in simple terms?
...ited Feb 19 '15 at 22:55
Freedom_Ben
8,59888 gold badges4949 silver badges8080 bronze badges
answered Mar 10 '11 at 7:31
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When would I use Task.Yield()?
...equires some "long running" initialization, ie:
private async void button_Click(object sender, EventArgs e)
{
await Task.Yield(); // Make us async right away
var data = ExecuteFooOnUIThread(); // This will run on the UI thread at some point later
await UseDataAsync(data);
}
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Java - No enclosing instance of type Foo is accessible
...nt where it is declared.
Let`s try to see the above concepts practically_
public class MyInnerClass {
public static void main(String args[]) throws InterruptedException {
// direct access to inner class method
new MyInnerClass.StaticInnerClass().staticInnerClassMethod();
// static ...
C++ catching all exceptions
...s, but it should be considered bad design. You can use c++11's new current_exception mechanism, but if you don't have the ability to use c++11 (legacy code systems requiring a rewrite), then you have no named exception pointer to use to get a message or name. You may want to add separate catch cl...
What exactly are DLL files, and how do they work?
...t.com/en-us/windows/win32/api/libloaderapi/…
– Jack_Hu
Aug 28 at 8:28
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When NOT to use yield (return) [duplicate]
...d)
public IEnumerable<string> GetKeys()
{
foreach(string key in _someDictionary.Keys)
yield return key;
}
// DO this
public IEnumerable<string> GetKeys()
{
return _someDictionary.Keys;
}
Avoid using yield return when you don't want to defer execution code for the metho...
Can an interface extend multiple interfaces in Java?
...nterface B with boolean test()? (Is this a cousin of the diamond problem?) __Tried it and the sensible thing happens: not allowed if the return type is different.
– Daniel
Jan 6 '15 at 17:38
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CGridCellNumeric - A numeric cell class for the MFC Grid - C/C++ - 清泛网 - 专注IT技能提升
... is done on the fly as the user is typing. All validation is done in the EN_UPDATE message handler, so any cut/copy and paste operations are immediately validated. If the user deletes the text in the cell, the value is set to zero.
Using the CGridCellNumeric class
Download and unzip the ...