大约有 30,000 项符合查询结果（耗时：0.0319秒） [XML]
SQL Server - stop or break execution of a SQL script
... That's awesome! It's a bit of a "big stick" approach, but there are times when you really need it. Note that it requires both severity 20 (or higher) and "WITH LOG".
– Rob Garrison
Sep 17 '09 at 15:41
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Create a string with n characters
...p does get faster as the number of iterations increases although the total time is still high. This holds true for when creating different sizes of space strings.
– kmecpp
Jul 8 '15 at 12:55
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How to enable file sharing for my app?
...for adding this. The only other thing I found confusing is that the first time you turn file sharing on and save a file you have to eject and reconnect your device for anything to show up. Just in case anyone else wastes time messing around with this.
– Cosworth66
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Get first day of week in PHP?
... is what I am using...
$day = date('w');
$week_start = date('m-d-Y', strtotime('-'.$day.' days'));
$week_end = date('m-d-Y', strtotime('+'.(6-$day).' days'));
$day contains a number from 0 to 6 representing the day of the week (Sunday = 0, Monday = 1, etc.).
$week_start contains the date for Sund...
Generate all permutations of a list without adjacent equal elements
... consideration is globally constrained in some way. The asymptotic running time is optimal, since the overhead of generation is on the order of the length of the output. The worst-case delay unfortunately is quadratic; it could be reduced to linear (optimal) with better data structures.
from collec...
Software Design vs. Software Architecture [closed]
...ngeable, but the consesus is that they are distinct. They are at the same time: different (1) stages, (2) areas of responsibility, and (3) levels of decision-making.
Architecture is the bigger picture: the choice of frameworks, languages, scope, goals, and high-level methodologies (Rational, wa...
Delete duplicate rows from small table
...eve this has to do with the inner select statement here getting executed N times (for all N rows in the dupes table) rather than the grouping that's going on in the other solution.
– David
Sep 12 '17 at 12:36
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get NSDate today, yesterday, this Week, last Week, this Month, last Month… variables
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Adapted from the Date and Time Programming Guide:
// Right now, you can remove the seconds into the day if you want
NSDate *today = [NSDate date];
// All intervals taken from Google
NSDate *yesterday = [today dateByAddingTimeInterval: -86400.0];
NSD...
Get loop counter/index using for…of syntax in JavaScript
...with a next() method that will return subsequent entries in the array each time it is called. There's no (visible) data in it; you get the data in the underlying object by calling next(), which for-of does behind the scenes. cc @tonyg
– Shog9
Sep 29 '17 at 16:3...
Programmatically access currency exchange rates [closed]
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Also, forex rates change all the time, and banks may only take into account the rate at midnight, local time. With ~2% daily volatility, there is incertitude.
– Alexandre C.
Sep 29 '10 at 9:02
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