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Using LINQ to concatenate strings
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Made a test with 10.000.000 iterations, aggregate took 4.3 secs and string.join took 2.3 secs. So I would say the perf diff is unimportant for 99% of common use cases. So if you're already doing a lot of linq to process your data, there's usuall...
MongoDB: Combine data from multiple collections into one..how?
...e076cdf52e541d9d29"),
"isbn": "978-3-16-148999-9",
"copies_sold": 1000
}
To merge both collections is just a matter of using $lookup in the following way:
db.books.aggregate([{
$lookup: {
from: "books_selling_data",
localField: "isbn",
foreignField:...
In Python, how do I split a string and keep the separators?
...split, hacky but worked for my case: re.split('% ', re.sub('% ', '%% ', '5.000% Additional Whatnot')) --> ['5.000%', 'Additional Whatnot']
– Kyle James Walker
Oct 11 '15 at 22:41
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Split large string in n-size chunks in JavaScript
I would like to split a very large string (let's say, 10,000 characters) into N-size chunks.
22 Answers
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Split a string by spaces — preserving quoted substrings — in Python
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I use shlex.split to process 70,000,000 lines of squid log, it's so slow. So I switched to re.
Please try this, if you have performance problem with shlex.
import re
def line_split(line):
return re.findall(r'[^"\s]\S*|".+?"', line)
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How to add text inside the doughnut chart using Chart.js?
... var txt = centerConfig.text;
var color = centerConfig.color || '#000';
var maxFontSize = centerConfig.maxFontSize || 75;
var sidePadding = centerConfig.sidePadding || 20;
var sidePaddingCalculated = (sidePadding / 100) * (chart.innerRadius * 2)
// Start with a base ...
Hidden Features of SQL Server
... Great for small result sets. I wouldn't use it on a table with more than 10000 rows unless you've got time to spare
– John Sheehan
Sep 23 '08 at 15:18
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Fixed point vs Floating point number
...d represent would be 99999.99999 and the smallest non-zero number would be 00000.00001. Every bit of code that processes such numbers has to have built-in knowledge of where the decimal point is.
A floating point number does not reserve a specific number of bits for the integer part or the fraction...
What is the best way to determine the number of days in a month with JavaScript?
...th(2, 1999)); // February in a non-leap year.
console.log(daysInMonth(2, 2000)); // February in a leap year.
Day 0 is the last day in the previous month. Because the month constructor is 0-based, this works nicely. A bit of a hack, but that's basically what you're doing by subtracting 32.
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How many socket connections can a web server handle?
...or dedicated hosting, I read somewhere a server/machine can only handle 64,000 TCP connections at one time, is this true? How many could any type of hosting handle regardless of bandwidth? I'm assuming HTTP works over TCP.
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