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How to determine the longest increasing subsequence using dynamic programming?
...tEnd in a loop using prev[bestEnd]. The -1 value is a sign to stop.
OK, now to the more efficient O(N log N) solution:
Let S[pos] be defined as the smallest integer that ends an increasing sequence of length pos. Now iterate through every integer X of the input set and do the following:
If X &...
Parsing CSV files in C#, with header
...
A CSV parser is now a part of .NET Framework.
Add a reference to Microsoft.VisualBasic.dll (works fine in C#, don't mind the name)
using (TextFieldParser parser = new TextFieldParser(@"c:\temp\test.csv"))
{
parser.TextFieldType = Field...
Format a datetime into a string with milliseconds
...hind seconds), use this:
from datetime import datetime
print datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3]
>>>> OUTPUT >>>>
2020-05-04 10:18:32.926
Note: For Python3, print requires parentheses:
print(datetime.utcnow().strftime('%Y-%m-%d %H:%M:%S.%f')[:-3])
...
Find a Pull Request on Github where a commit was originally created
...ues" link on the left.
UPDATED 13 July 2017
Via the Github UI there is a now a really easy way to do this. If you are looking at a commit in the list of commits in a branch in the UI, click on the link to the commit itself. If there is a PR for that commit and it wasn't added directly to the branc...
How do I preview emails in Rails?
...
Action Mailer now has a built in way of previewing emails in Rails 4.1. For example, check this out:
# located in test/mailers/previews/notifier_mailer_preview.rb
class NotifierPreview < ActionMailer::Preview
# Accessible from http:...
How can I truncate a datetime in SQL Server?
...rect way (old):
dateadd(dd, datediff(dd,0, getDate()), 0)
This is older now, but it's still worth knowing because it can also easily adapt for other time points, like the first moment of the month, minute, hour, or year.
This correct way uses documented functions that are part of the ansi standa...
Does Foreign Key improve query performance?
...pretty much useless because it doesn't answer the question. It's great to know that foreign keys are not intended to have a (positive) effect on performance, but the question was concerning reality, not intentions.
– John
Mar 15 '17 at 16:04
...
Detecting that the browser has no mouse and is touch-only
... to unplug his mouse and go full touch.. do you wait for him to touch your now crammed interface, then change it right after he's made the effort to pinpoint your now crowded UI?
In bullet form, quoting stucox at https://github.com/Modernizr/Modernizr/issues/869#issuecomment-15264101
We want...
Get timezone from DateTime
...
DateTime itself contains no real timezone information. It may know if it's UTC or local, but not what local really means.
DateTimeOffset is somewhat better - that's basically a UTC time and an offset. However, that's still not really enough to determine the timezone, as many different t...
How do search engines deal with AngularJS applications?
...
Update May 2014
Google crawlers now executes javascript - you can use the Google Webmaster Tools to better understand how your sites are rendered by Google.
Original answer
If you want to optimize your app for search engines there is unfortunately no way...