tail -N file | head -1

Rajarshi

find . -exec grep -l “string to find” {} \;

I tend to get an error that says “Argument List Too Long” when I use Radu’s.

Seriously though,

one should be able to write

std::string foo = 123
or even

std:: string foo;
foo.ToInt(123);

dd if=/dev/zero of=hugefile bs=512 count=1 oseek=204800

Some systems even have a special truncate utility:

truncate -s 100m hugefile

We updated the entry and now we use a different name for the string variable, as “str” is also a member of “stringstream.”

One question though, why does the string variable have to be named str?
I tried a different variable name and surprisingly it doesn’t work.

I updated the post. To be more accurate, ‘_’ can be escaped with ‘\’.

SELECT tablename FROM pg_tables
WHERE tablename NOT LIKE ‘pg%’
AND tablename NOT LIKE ’sql%’

- ‘_’ is a wild card character too
- your query will return a number of system tables like sql_features, sql_packages, etc.

I’m sick and tired of

sprintf(buf, “somestring_%i”,counter++);
string name(buf);

which neither generic, readable nor .. c++

Just a wee note; Emacs shortcut notation is normally written with ‘M’ (Meta) and not the actual key acting as Meta (normally Alt or Esc). Not that I mind, it’s just I’ve never seen it written with anything else before

/*
* Reading an ‘unsigned int’ from a file, in binary mode.
*/

FILE *fp;
unsigned int e;

fp = fopen(“foo.txt”, “rb”);
if (fp == NULL) {
/* Error handling code. */
}
if (fread(&e, sizeof(e), 1, fp) == 0) {
/* Nothing read; handle the error. */
}

Writing is similarly simple, with the fread() call replace by fwrite().

In C (as opposed to C++), you don’t have to go through all the hoops to “reinterpret a cast” or similar. That’s, some times, more elegant and fun to read

#include <sstream>

template <class T>
inline std::string to_string (const T& t)
{
std::stringstream ss;
ss << t;
return ss.str();
}

head -N file | tail -1

Whenever we don’t remember or don’t know something we search the net and then post the solution so that the next time we find it faster.

We choose a blog setup because is popular and easy to setup.

sometimes you seem to be responding to questions – do you frequent any newsgroups/forums/irc channels? or are these from people you know?

another thing – why wordpress (as opposed to a more structured knowledge base and/or something more open/collaborative)?

(who are you? must be a busy person to be touching all of these things on a daily basis

kill -HUP PID

find . -exec grep -H “string to find” {} \;

In both cases, for faster results (does not spawn multiple grep instances), reverse grep with find like this:

grep -l “string to find” `find .`

or

grep -H “string to find” `find .`