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Hash function that produces short hashes?
... bits), CRC-32 or Adler-32.
CRC-32 is slower than Adler32 by a factor of 20% - 100%.
Fletcher-32 is slightly more reliable than Adler-32. It has a lower computational cost than the Adler checksum: Fletcher vs Adler comparison.
A sample program with a few Fletcher implementations is given below:...
PHP: Move associative array element to beginning of array
... it is 3x faster and takes half as much memory. I also found that it takes 20% more time than moving the same element to the end of the array.
– Mark Eirich
Jul 1 '12 at 22:17
...
Is optimisation level -O3 dangerous in g++?
...s of the code that takes more execution time and that alone can give up to 20% more speed.
– CoffeDeveloper
Apr 5 '15 at 15:45
...
What columns generally make good indexes?
...olumn.
They will not be useful if:
You are selecting a large % (>10-20%) of the rows in the table
The additional space usage is an issue
You want to maximize insert performance. Every index on a table reduces insert and update performance because they must be updated each time the data chang...
Drawing a connecting line between two elements [closed]
...rent().css('width'));
if(width==10){
$(this).parent().css('width','20%');
$('#canvas').css('width','60%');
}else{
$(this).parent().css('width','10px');
$('#canvas').css('width','calc( 80% - 10px)');
}
});
$('.ui-item').draggable({
drag: function( event, ui ) {
...
Code Golf: Collatz Conjecture
... an optimization. Otherwise I would use @_=$n;goto &Collatz. (It is 10-20% slower if you change state @next to my @next
– Brad Gilbert
Mar 9 '10 at 15:37
3
...
What is android:weightSum in android, and how does it work?
... android:gravity="center"
android:text="20%"
android:textColor="@android:color/white" >
</TextView>
<TextView
android:layout_width="0dp"
android:layout_height="...
How to show Page Loading div until the page has finished loading?
...%;
background-color:white;
vertical-align:bottom;
padding-top: 20%;
filter: alpha(opacity=75);
opacity: 0.75;
font-size:large;
color:blue;
font-style:italic;
font-weight:400;
background-image: url("../Common/loadingGIF.gif");
background-repeat: no-repea...
Is String.Format as efficient as StringBuilder
...ence. StringBuilder and Format differ by barely 5-10%. I got variations of 20% running the tests a few times.
Milliseconds, a million iterations:
Concatenation: 367
New stringBuilder for each key: 452
Cached StringBuilder: 419
string.Format: 475
The lesson I take away is that the performance d...
What is the difference between List (of T) and Collection(of T)?
...
Tried it on my machine and list is about 20% faster. Would be interested in some discussion on why this might be. Maybe the list is better with allocating memory.
– Ray
Dec 29 '08 at 23:55
...