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Read String line by line
...the efficiency angle, I created a little test class (below). Outcome for 5,000,000 lines:
Comparing line breaking performance of different solutions
Testing 5000000 lines
Split (all): 14665 ms
Split (CR only): 3752 ms
Scanner: 10005
Reader: 2060
As usual, exact times may vary, but the ratio holds...
【最全】CSS响应式布局的5种实现方式 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... （min-width 从小到大）
<style>
body {
background-color: #000;
}
@media screen and (min-width: 576px) {
body {
background-color: red;
}
}
@media screen and (min-width: 769px) {
body {
background-color: yellow;
}
}
@media screen and (min-width: 992p...
How to style a div to be a responsive square? [duplicate]
...his is a Square</h1>
</div>
CSS:
.square {
background: #000;
width: 50vw;
height: 50vw;
}
.square h1 {
color: #fff;
}
I am sure there are many other ways to do this but this way seemed the best to me.
...
How can I benchmark JavaScript code? [closed]
...nding on how complex your functions are) somewhere closer to 100 or even 1,000 iterations should do the job.
Firebug also has a profiler if you want to see which parts of your function are slowing it down.
Edit: To future readers, the below answer recommending JSPerf should be the correct answer. ...
Quick Sort Vs Merge Sort [duplicate]
...ick sort and merge sort myself and saw the running times for a sample of 1,000,000 elements.
Quick sort was able to do it in 156 milliseconds whereas
Merge sort did the same in 247 milliseconds
The Quick sort data was, however, was random and quick sort performs well if the data is random where as...
Format JavaScript date as yyyy-mm-dd
...e.getTimezoneOffset()
yourDate = new Date(yourDate.getTime() + (offset*60*1000))
return yourDate.toISOString().split('T')[0]
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How would you count occurrences of a string (actually a char) within a string?
...= 17s
foreach (from bobwienholt's answer) = 10s
(The times are for 50,000,000 iterations so you're unlikely to notice much difference in the real world.)
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Create a date from day month and year with T-SQL
...
Bad one. Compose me from ints the date of 1st Jan 0001
– Oleg Dok
Mar 4 '13 at 12:56
24
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How can I quickly sum all numbers in a file?
...;
}
-e syntax OK
Just for giggles, I tried this with a file containing 1,000,000 numbers (in the range 0 - 9,999). On my Mac Pro, it returns virtually instantaneously. That's too bad, because I was hoping using mmap would be really fast, but it's just the same time:
use 5.010;
use File::Map qw(ma...
How to truncate milliseconds off of a .NET DateTime
...method caused some of my unit tests to fail: Expected: 2010-05-05 15:55:49.000 But was: 2010-05-05 15:55:49.000. I'm guessing due to what Joe mentioned about fractions of a millisecond.
– Seth Reno
May 5 '10 at 20:57
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