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How to find memory leak in a C++ code/project?
...house a string.
delete [] str; // Clear those 30 bytes and make str point nowhere.
2
Reallocate memory only if you've deleted. In the code below, str acquires a new address with the second allocation. The first address is lost irretrievably, and so are the 30 bytes that it pointed to. Now they'r...
Querying DynamoDB by date
...ps on the range key only. The hash key is required such that the service knows which partition to look in to find the data.
You can of course perform a scan operation to filter by the date value, however this would require a full table scan, so it is not ideal.
If you need to perform an indexed l...
How to create a remote Git repository from a local one?
...ote add origin URL), and then locally you just say git push origin master. Now any other repository can pull from the remote repository.
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Using SQL Server 2008 and SQL Server 2005 and date time
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I voted this down by mistake, undid that, but now can't do what I really wanted to do which is vote it up! Thank you for finding the issue. If I understand correctly, does the value change from 2005 to 2008 due to updating the model from the database, where the database ...
How to get all child inputs of a div element (jQuery)
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Interesting... Now I'm confused... The : is for pseudo-classes, isn't it? But we want to select an element type. Why the :?
– mnemosyn
Mar 8 '10 at 16:15
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Difference between case object and object
...between a standard Scala object and a case object is explained by what we know about the difference between standard classes and case classes. This answer doesn't even address the wording of the question.
– itsbruce
Jan 31 '17 at 13:50
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Hidden features of mod_rewrite
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Dude, totally the best article on the internet now on mod rewrite. I hate that thing. Im a lighttpd heretic because of how much i hate mod_rewrite.
– Kent Fredric
Nov 13 '08 at 1:20
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Can a C++ enum class have methods?
...IsYellow() const { return value == Banana; }
private:
Value value;
};
Now you can write:
Fruit f = Fruit::Strawberry;
f.IsYellow();
And the compiler will prevent things like:
Fruit f = 1; // Compile time error.
You could easily add methods such that:
Fruit f("Apple");
and
f.ToString(...
How to write to a file in Scala?
...ite
file.writeStrings( "It costs" :: "one" :: "dollar" :: Nil)
// Now all options
file.writeStrings("It costs" :: "one" :: "dollar" :: Nil,
separator="||\n||")(codec = Codec.UTF8)
}
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What does the “map” method do in Ruby?
..., convert each element by some rule
names.map! {|name| name.capitalize } # now names contains ['Danil', 'Edmund']
names.each { |name| puts name + ' is a programmer' } # here we just do something with each element
The output:
Danil is a programmer
Edmund is a programmer
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