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When should I use the Visitor Design Pattern? [closed]
...und()
{ std::cout << "meow!\n"; }
But proceeding in this way, each time you want to add an operation you must modify the interface to every single class of the hierarchy. Now, suppose instead that you are satisfied with the original interface, and that you want to make the fewest possible mo...
Why use the INCLUDE clause when creating an index?
...mployee found in the index is no longer necessary --> you save a lot of time.
Obviously, you cannot include every column in every non-clustered index - but if you do have queries which are missing just one or two columns to be "covered" (and that get used a lot), it can be very helpful to INCLUD...
What is the difference between == and equals() in Java?
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The difference between == and equals confused me for sometime until I decided to have a closer look at it.
Many of them say that for comparing string you should use equals and not ==. Hope in this answer I will be able to say the difference.
The best way to answer this question wi...
Best way to make Django's login_required the default
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@richard decorators run at compile time, and in this case all I did was: function.public = True. Then when the middleware runs it can look for the .public flag on the function to decide whether to allow the access or not. If that doesn't make sense I can sen...
vertical-align with Bootstrap 3
...refixes omitted due to brevity. Flexbox syntax has been changed during the time. The new written syntax won't work on older versions of web browsers (but not that old as Internet Explorer 9! Flexbox is supported on Internet Explorer 10 and later).
This means you should also use vendor-prefixed ...
Exception thrown in catch and finally clause
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A method can't throw two exceptions at the same time. It will always throw the last thrown exception, which in this case it will be always the one from the finally block.
When the first exception from method q() is thrown, it will catch'ed and then swallowed by the finall...
Best dynamic JavaScript/JQuery Grid [closed]
...ses I'm using jQuery Grid. It got cool and easy API also. At this point of time i'm happy with jQuery Grid. Its good.
– Somnath
Jan 19 '12 at 17:22
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What does immutable mean?
..., this value is created from scratch as opposed to being replaced. So everytime a new value is assigned to the same string, a copy is created. So in reality, you are never changing the original value.
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What's the need of array with zero elements?
...ally, for GCC (C90) in fact.
It's also called a struct hack.
So the next time, I would say:
struct bts_action *bts = malloc(sizeof(struct bts_action) + sizeof(char)*100);
It will be equivalent to saying:
struct bts_action{
u16 type;
u16 size;
u8 data[100];
};
And I can create any...
Trusting all certificates with okHttp
...lient that trusts everything while a proxy is set. This has been done many times over, but my implementation of a trusting socket factory seems to be missing something:
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