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Simple way to repeat a String in java
...simple commons method or operator that allows me to repeat some String n times. I know I could write this using a for loop, but I wish to avoid for loops whenever necessary and a simple direct method should exist somewhere.
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Select N random elements from a List in C#
... it is, the next has a 4/39 chance, otherwise it has a 5/39 chance. By the time you get to the end you will have your 5 items, and often you'll have all of them before that.
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What is the significance of load factor in HashMap?
... in the hash table, and the initial capacity is simply the capacity at the time the hash table is created. The load factor is a measure of how full the hash table is allowed to get before its capacity is automatically increased. When the number of entries in the hash table exceeds the product of the...
Wrapping StopWatch timing with a delegate or lambda?
...h class?
public static class StopwatchExtensions
{
public static long Time(this Stopwatch sw, Action action, int iterations)
{
sw.Reset();
sw.Start();
for (int i = 0; i < iterations; i++)
{
action();
}
sw.Stop();
retur...
FFmpeg: How to split video efficiently?
...t question, so I did as @AlcubierreDrive suggested…
echo "Two commands"
time ffmpeg -v quiet -y -i input.ts -vcodec copy -acodec copy -ss 00:00:00 -t 00:30:00 -sn test1.mkv
time ffmpeg -v quiet -y -i input.ts -vcodec copy -acodec copy -ss 00:30:00 -t 01:00:00 -sn test2.mkv
echo "One command"
tim...
How to efficiently concatenate strings in go
...ring("a")
}
fmt.Println(buffer.String())
}
This does it in O(n) time.
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Will strlen be calculated multiple times if used in a loop condition?
... the iteration. If it might, then you'll need to either call strlen() each time, or handle it through more complicated logic.
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Cached, PHP generated Thumbnails load slowly
...nly 3% faster overall, and while not answering the site's main bottleneck. Time for for clarification of my question, and, another bounty:
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How can I convert a datetime object to milliseconds since epoch (unix time) in Python?
I have a Python datetime object that I want to convert to unix time, or seconds/milliseconds since the 1970 epoch.
13 Ans...
What's the fastest way to delete a large folder in Windows?
...l representation inside Windows Explorer, it is still going to take a long time - MS uses a 'Schlemeil the Painter' algorithm (joelonsoftware.com/articles/fog0000000319.html) anytime a dir or del is done
– warren
Oct 9 '08 at 11:36
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