Besides calling omp_get_num_threads() outside of the parallel region in your case, calling omp_set_num_threads() still doesn’t guarantee that the OpenMP runtime will use exactly the specified number of threads. omp_set_num_threads() is used to override the value of the environment variable OMP_NUM_THREADS and they both control the upper limit of the size of the thread team that … Read more
import re m = re.search(r’\d+$’, string) # if the string ends in digits m will be a Match object, or None otherwise. if m is not None: print m.group() \d matches a numerical digit, \d+ means match one-or-more digits (greedy: match as many consecutive as possible). And $ means match the end of the string.
Use str_pad(). $invID = str_pad($invID, 4, ‘0’, STR_PAD_LEFT);
Both GCC and clang generate beautiful assembly for the following simple, straightforward, portable code: double clamp(double d, double min, double max) { const double t = d < min ? min : d; return t > max ? max : t; } > gcc -O3 -march=native -Wall -Wextra -Wc++-compat -S -fverbose-asm clamp_ternary_operator.c GCC-generated assembly: maxsd … Read more
In this case you can divide the total size by the size of the first element: num = sizeof(names) / sizeof(names[0]); Careful though, this works with arrays. It won’t work with pointers.
+ converts the value to a number. a gets converted to 123 and 123 === 123. b gets converted to NaN but NaN !== NaN (because NaN is never equal to another NaN according step 4a of the equality rules).
JavaScript is parsing the group of 3 numbers as an octal number when there’s a leading zero digit. When the group of three digits is all zeros, the result is the same whether the base is octal or decimal. But when you give JavaScript ‘009’ (or ‘008’), that’s an invalid octal number, so you get … Read more
First the answer: 116 – it’s the decimal form of the ASCII letters “this is correc” so the letter ‘t’ comes next. But, while I figured out (given your clues) the pattern, I’d make a few comments: Presumably he was trying to see how you attacked a difficult, even nebulous problem. If he truly sat … Read more
Check out http://www.php.net/manual/en/function.round.php <?php echo round(3.6451895227869, 2); ?> EDIT Try using this custom function http://www.php.net/manual/en/function.round.php#102641 <?php function round_up ( $value, $precision ) { $pow = pow ( 10, $precision ); return ( ceil ( $pow * $value ) + ceil ( $pow * $value – ceil ( $pow * $value ) ) ) / $pow; … Read more
In Java and several other languages, an integer literal beginning with 0 is interpreted as an octal (base 8) quantity. For single-digit numbers (other than 08 and 09, which are not allowed), the result is the same, so you might not notice that they are being interpreted as octal. However, if you write numbers with … Read more