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Regex to replace everything except numbers and a decimal point
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best answer. Removes 0.000 10.000000 .22 2.234, but keeps 1, 10, 10.1, 10.22
– Robert Baker
Apr 8 '15 at 17:27
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How can I remove duplicate rows?
... to remove duplicate rows from a fairly large SQL Server table (i.e. 300,000+ rows)?
38 Answers
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Java Date vs Calendar
... Yes. But there are thousands of people reading this page now, over 150,000 so far. My comment is a note to them, not a criticism of you.
– Basil Bourque
Oct 19 '18 at 22:54
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A generic error occurred in GDI+, JPEG Image to MemoryStream
...en the image was scaled to meet our dimensions, the height was north of 68,000 pixels and our app exploded with A generic error occurred in GDI+.
You can verify this yourself with test:
int width = 480;
var height = UInt16.MaxValue - 36; //succeeds at 65499, 65500
try
{
while(true)
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Generate array of all letters and digits
...')] is a little more than twice as fast as (0...36).map{|i|i.to_s 36} (1.450000s versus 2.26000s where n = 100,000). If inclusion of upcase is desired, use the following: [*('a'..'z'),*('A'..'Z'),*('0'..'9')]
– Viet
Feb 20 '14 at 20:27
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Maintain/Save/Restore scroll position when returning to a ListView
...solution the list jumping back to the top?
– Papajohn000
Mar 26 '14 at 22:24
2
As aaronvargas sai...
Split a List into smaller lists of N size
...e here. I happened to have a requirement of splitting a list with over 200,000 records into smaller lists with about 3000 each, which brought me to this thread, and I tested both methods and found the running time is almost the same. After that I tested splitting that list into lists with 3 records ...
Is there a JavaScript function that can pad a string to get to a determined length?
... solution here and this is for me much much simpler:
var n = 123
String("00000" + n).slice(-5); // returns 00123
("00000" + n).slice(-5); // returns 00123
(" " + n).slice(-5); // returns " 123" (with two spaces)
And here I made an extension to the string object:
String.prototype.paddingLef...
How does the HyperLogLog algorithm work?
...hance that this stream has a cardinality of 8" Can you please explain why 000 means expected number of trials 2^3. I tried to compute math expectation of number of trials assuming we have at least one run with 3 zeros and no runs with 4 zeros...
– yura
Aug 9 '...
Is there any performance gain in indexing a boolean field?
...f there are relatively few records of one value. For example, if you have 1000 records and 10 of them are TRUE, then it would be useful if you searching with isok = 1
As Michael Durrant mentioned, it also makes writes slower.
EDIT: Possible duplication: Indexing boolean fields
Here it explains th...