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Clean ways to write multiple 'for' loops
...r
{
template <typename C>
constexpr static std::true_type test(typename C::iterator *);
template <typename>
constexpr static std::false_type test(...);
constexpr static bool value = std::is_same<
std::true_type, decltype(test<typename std::remov...
Print string and variable contents on the same line in R
... get null on the end if you put the cat inside of a print like: print(cat("test", var)) which should be cat("test", var)
– Spidfire
Jun 16 '16 at 14:36
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Creating an empty Pandas DataFrame, then filling it?
...as a new feature in 0.8.0, I would definitely recommend upgrading to the latest stable release (0.9.1) there are many bug fixes and new features. :)
– Andy Hayden
Dec 15 '12 at 9:52
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What is the Python 3 equivalent of “python -m SimpleHTTPServer”
... utils, 2to3 accepts stdin if the argument passed is -. Therefore, you can test without creating any files like so:
$ 2to3 - <<< "import SimpleHTTPServer"
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PHP Regex to check date is in YYYY-MM-DD format
...ember
31 days in January, March, May, July, August, October and December
Test:
The following dates should all pass validation:
1976-02-29
2000-02-29
2004-02-29
1999-01-31
The following dates should all fail validation:
2015-02-29
2015-04-31
1900-02-29
1999-01-32
2015-02-00
Range:
We'll tes...
SignalR - Sending a message to a specific user using (IUserIdProvider) *NEW 2.0.0*
In the latest version of Asp.Net SignalR, was added a new way of sending a message to a specific user, using the interface "IUserIdProvider".
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How to inspect the return value of a function in GDB?
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(gdb) r
Starting program: /usr/home/hark/a.out
Breakpoint 1, fun () at test.c:2
2 return 42;
(gdb) finish
Run till exit from #0 fun () at test.c:2
main () at test.c:7
7 return 0;
Value returned is $1 = 42
(gdb)
The finish command can be abbreviated as fin. Do NOT ...
How does Stack Overflow generate its SEO-friendly URLs?
...d to "ss" sb.Length == maxlene will never be true, it is better instead to test for (sb.Length > = maxlen).
– Henrik Stenbæk
Mar 29 '12 at 13:14
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PDO Prepared Inserts multiple rows in single query
...n $e){
echo $e->getMessage();
}
$pdo->commit();
Although in my test, there was only a 1 sec difference when using multiple inserts and regular prepared inserts with single value.
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Return Boolean Value on SQL Select Statement
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Doing the Exists( test is much faster than doing a Count(1) test on tables with large numbers of rows.
– Scott Chamberlain
Apr 3 '14 at 2:06
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