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Reading a file line by line in Go
... ReadString/ReadBytes/... in bufio.Reader
In my testcase, ~250MB, ~2,500,000 lines, bufio.Scanner(time used: 0.395491384s) is faster than bufio.Reader.ReadString(time_used: 0.446867622s).
Source code: https://github.com/xpzouying/go-practice/tree/master/read_file_line_by_line
Read file use bufio...
.NET unique object identifier
... I found that I would usually get a duplicate by the time I had created 10,000 instance of an object (a WinForms TextBox), and could never get past 30,000. Code relying on the supposed uniqueness was causing intermittent crashes in a production system after creating no more than 1/10 that many obje...
MongoDB or CouchDB - fit for production? [closed]
...gs including real time analytics and a caching layer. They are doing over 1000 writes per second to a fairly large database.
If you go to the mongodb Production Deployments page you'll see some people who are using mongo in production.
If you have any questions about the scale or scope of producti...
Add EBS to Ubuntu EC2 Instance
... (with update to /etc/fstab so it stays mounted on reboot):
sudo mkdir -m 000 /vol
echo "/dev/xvdf /vol auto noatime 0 0" | sudo tee -a /etc/fstab
sudo mount /vol
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Get last n lines of a file, similar to tail
... timeit it seems pretty fast. Tailing 100 lines of a log file that has 100,000 lines:
>>> timeit.timeit('tail.tail(f, 100, 4098)', 'import tail; f = open("log.txt", "r");', number=10)
0.0014600753784179688
>>> timeit.timeit('tail.tail(f, 100, 4098)', 'import tail; f = open("log.tx...
What's the difference between `on` and `live` or `bind`?
...s attach directly to the event target. If you have a table of, let's say, 1000 lines and 100 columns, and each of the 100'000 cells includes a checkbox which click you want to handle. Attaching 100'000 event handlers will take a lot of time on page load. Creating a single event at the table level, a...
Read/Write 'Extended' file properties (C#)
...course, since there aren't millions of them, you could limit the loop to 1,000.)
– skst
Nov 17 '18 at 18:03
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Python and pip, list all versions of a package that's available?
... answered Mar 24 '11 at 16:11
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If using maven, usually you put log4j.properties under java or resources?
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Google results for "Jump off a bridge": 18.200.000. Google results for "Do not jump off a bridge": 137.000
– djjeck
Jan 11 '13 at 0:35
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LINQ: When to use SingleOrDefault vs. FirstOrDefault() with filtering criteria
...ut 10 times faster than SingleOrDefault , using a List<MyClass> of 9,000,000 elements, class contains 2 integers and the Func contains a search of these two integers. Searching 200 times in a loop took 22 seconds on var v = list.SingleOrDefault(x => x.Id1 == i && x.Id2 == i); and va...