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C++ multiline string literal
...
Well ... Sort of. The easiest is to just use the fact that adjacent string literals are concatenated by the compiler:
const char *text =
"This text is pretty long, but will be "
"concatenated into just a single string. "
"The disadvantage is that you have to quote "
"each part, and n...
What is the difference between . (dot) and $ (dollar sign)?
...fore cannot be used with the . operator.
show can take an Int and return a String.
putStrLn can take a String and return an IO ().
You can chain show to putStrLn like this:
(putStrLn . show) (1 + 1)
If that's too many parentheses for your liking, get rid of them with the $ operator:
putStrLn ....
Where is the php.ini file on a Linux/CentOS PC? [duplicate]
...s you need Putty)
ssh user@ip
php -i | grep "Loaded Configuration File"
And it will show you something like this Loaded Configuration File => /etc/php.ini.
ALTERNATIVE METHOD
You can make a php file on your website, which run: <?php phpinfo(); ?>, and you can see the php.ini location o...
How to choose the id generation strategy when using JPA and Hibernate
...quence.
uuid
uses a 128-bit UUID algorithm to generate identifiers of type string that are unique within a network (the IP address is used). The UUID is encoded as a string of 32 hexadecimal digits in length.
guid
uses a database-generated GUID string on MS SQL Server and MySQL.
native
selects ident...
Convert Iterator to ArrayList
...
You can copy an iterator to a new list like this:
Iterator<String> iter = list.iterator();
List<String> copy = new ArrayList<String>();
while (iter.hasNext())
copy.add(iter.next());
That's assuming that the list contains strings. There really isn't a faster way t...
What is the benefit of using $() instead of backticks in shell scripts?
..."x is `sed ... <<<\"$y\"`"
or writing something like:
IPs_inna_string=`awk "/\`cat /etc/myname\`/"'{print $1}' /etc/hosts`
because $() uses an entirely new context for quoting
which is not portable as Bourne and Korn shells would require these backslashes, while Bash and dash don't.
S...
What is Python buffer type for?
...00634ab0>
>>> print t
world
The buffer in this case is a sub-string, starting at position 6 with length 5, and it doesn't take extra storage space - it references a slice of the string.
This isn't very useful for short strings like this, but it can be necessary when using large amount...
What port is a given program using? [closed]
...
netstat -b -a lists the ports in use and gives you the executable that's using each one. I believe you need to be in the administrator group to do this, and I don't know what security implications there are on Vista.
I usually add -n as well to make it a little...
Is there a simple way to convert C++ enum to string?
... I usually prefer the following method, so that it's possible to tweak the string a bit.
#define X(a, b) a,
#define X(a, b) b,
X(Red, "red")
X(Green, "green")
// etc.
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vector vs. list in STL
... It doesn't even have to be an UglyBlob -- even an objects with just a few string members can easily be prohibitively expensive to copy, so the reallocations will cost. Also: Don't neglect the space overhead the exponential growth of a vector holding objects of a few dozen bytes in size can cause (i...