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Why do C and C++ compilers allow array lengths in function signatures when they're never enforced?
...er to the first element of the array is passed instead.
Since the pointer does not include any length information, the contents of your [] in the function formal parameter list are actually ignored.
The decision to allow this syntax was made in the 1970s and has caused much confusion ever since......
Arguments or parameters? [duplicate]
..."The variable x has the value 5," but hopefully the distinction is clear.
Does that clarify things?
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Ruby: How to get the first character of a string
...s J
puts last_name.initial # prints S
The other method mentioned here doesn't work on Ruby 1.8 (not that you should be using 1.8 anymore anyway!--but when this answer was posted it was still quite common):
puts 'Smith'[0] # prints 83
Of course, if you're not doing it on a regular b...
Display block without 100% width
...applying this but since the span elements (title and date, in the example) doesn't have float the link gets positioned before the last span. Guess one solution would be to make all child elements in the li float.
– Staffan Estberg
Oct 3 '12 at 17:01
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Regular expression to match any character being repeated more than 10 times
...command grep -E '([=o])\1{10}' <<< '==o==o==o==o==o==o===o==o===' does not match the line! However the command without \1 matches the line: grep -E '([=o]){10}' <<< '==o==o==o==o==o==o===o==o==='. Please could you explain? Cheers ;)
– olibre
N...
PHP page redirect [duplicate]
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It is a good practice to call exit() right after it so that code below it does not get executed.
Also, from the documentation:
Remember that header() must be called before any actual output is sent, either by normal HTML tags, blank lines in a file, or from PHP. It is a very common error to re...
Difference between the Facade, Proxy, Adapter and Decorator design patterns? [closed]
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Proxy provides the same interface as the proxied-for class and typically does some housekeeping stuff on its own. (So instead of making multiple copies of a heavy object X you make copies of a lightweight proxy P which in turn manages X and translates your calls as required.) You are solving the p...
C++ map access discards qualifiers (const)
...hat is mapped to a key equivalent to key, performing insertion if such key does not already exist.
As a result, your function cannot be declared const, and use the map's operator[].
std::map's find() function allows you to look up a key without modifying the map.
find() returns an iterator, o...
How can I create a unique constraint on my column (SQL Server 2008 R2)?
...t in your case you just need to run the piece of code you already have. It doesn't need to be entered into the expression dialogue at all.
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C# Create New T()
...etObject()
{
return new T();
}
}
T could be a class that does not have a default constructor: in this case new T() would be an invalid statement. The new() constraint says that T must have a default constructor, which makes new T() legal.
You can apply the same constraint to a gen...