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Appending a vector to a vector [duplicate]
...y be advisable. It's smart to use reserve if you are repeatedly inserting into a vector for which you know the final size, and that size is large. Otherwise, I'd let the STL grow your vector as needed.
– moodboom
Sep 10 '13 at 16:24
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What is the usefulness of `enable_shared_from_this`?
... shared_ptr<Y> f()
{
return shared_from_this();
}
}
int main()
{
shared_ptr<Y> p(new Y);
shared_ptr<Y> q = p->f();
assert(p == q);
assert(!(p < q || q < p)); // p and q must share ownership
}
The method f() returns a valid shared_ptr, eve...
Does a method's signature in Java include its return type?
Does the method signature in a Java class/interface include its return type?
14 Answers
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Calculating frames per second in a game
...e global (i.e. keep it's value across all frames) and ideally a floating point number. It contains the average/aggregate value and get's updated on each frame. The higher the ratio, the longer it will take to settle the "time" variable towards a value (or drift it away from it).
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Sort array of objects by single key with date value
...current updated_at in ISO format. We use new Data(iso_string).getTime() to convert ISO time to Unix timestamp. A Unix timestamp is a number that we can do simple math on. We subtract the first and second timestamp the result is; if the first timestamp is bigger than the second the return number will...
How expensive is the lock statement?
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Here is an article that goes into the cost. Short answer is 50ns.
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How can I “unuse” a namespace?
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In general, this is a terrible idea. C++ headers are not intended to be included in an alternately namespace as was used here.
– Aaron
Oct 3 '08 at 18:06
23
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Adding multiple columns AFTER a specific column in MySQL
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Try this
ALTER TABLE users
ADD COLUMN `count` SMALLINT(6) NOT NULL AFTER `lastname`,
ADD COLUMN `log` VARCHAR(12) NOT NULL AFTER `count`,
ADD COLUMN `status` INT(10) UNSIGNED NOT NULL AFTER `log`;
check the syntax
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Logging raw HTTP request/response in ASP.NET MVC & IIS7
...e-wire format (i.e including HTTP method, path, all headers, and the body) into a database.
15 Answers
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How can I get LINQ to return the object which has the max value for a given property? [duplicate]
....ID);
Console.ReadKey();
}
}
public class Item
{
public int ClientID { get; set; }
public int ID { get; set; }
}
Rearrange the list and get the same result
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