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Where do I use delegates? [closed]
...elegate lays out the method signature for the kind of method it defines.
Based on this statement, a delegate is a function pointer and it defines what that function looks like.
A great example for a real world application of a delegate is the Predicate. In the example from the link, you will not...
How can I print the contents of a hash in Perl?
...hl. Sorry, still not understanding. You're saying that each is ~30% slower based on what? Is everytime, for every situation, a gap of 30% ?
– Carlos Sá
Nov 24 '17 at 11:47
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How do I apply a style to all buttons of an Android application
... for help, clarification, or responding to other answers.Making statements based on opinion; back them up with references or personal experience.To learn more, see our tips on writing great answers.
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Unpack a list in Python?
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Access to private inherited fields via reflection in Java
..."Field '" + fieldName
+ "' not found on class " + clazz);
}
(based on this answer)
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What's the purpose of SQL keyword “AS”?
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The AS keyword is to give an ALIAS name to your database table or to table column. In your example, both statement are correct but there are circumstance where AS clause is needed (though the AS operator itself is optional), e.g.
SELECT salary * 2 AS "Double salary" FROM empl...
What is x after “x = x++”?
...iginal code
int x = 7;
x = x++;
Let's rewrite this to do the same thing, based on removing the ++ operator:
// behaves the same as the original code
int x = 7;
int tmp = x; // value of tmp here is 7
x = x + 1; // x temporarily equals 8 (this is the evaluation of ++)
x = tmp; // oops! we overwrote...
How to make sure that string is valid JSON using JSON.NET
... return false;
}
}
The reason to add checks for { or [ etc was based on the fact that JToken.Parse would parse the values such as "1234" or "'a string'" as a valid token. The other option could be to use both JObject.Parse and JArray.Parse in parsing and see if anyone of them succeeds, b...
Get value from NSTextField
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Handler vs AsyncTask
... reasons:
AsyncTask is not guaranteed to run since there is a ThreadPool base and max size set by the system and if you create too much asynctask they will eventually be destroyed
AsyncTask can be automatically terminated, even when running, depending on the activity lifecycle and you have no cont...