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Explain how finding cycle start node in cycle linked list work?
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Distance run by slow: x + y
Distance run by fast: x + m(y + z) + y i.e. extra y where they meet
Since fast runs with twice the speed of slow, and that they have been running for same time, it implies that if we double the distance ran by slow, we get the distance ran by fast. Thus,
2(x + y) =...
How to log out user from web site using BASIC authentication?
...location back to the pre-login page. This way, the user will never see the extra login dialog during logout, nor have to remember to put in bad credentials.
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How to use R's ellipsis feature when writing your own function?
...owever, as it adds some ambiguity and further complication to the argument string (and makes the function signature unclear to any other user). The argument list is an important piece of documentation for function users.
Otherwise, it is also useful for cases when you want to pass through paramete...
Ukkonen's suffix tree algorithm in plain English
...ical symbology. The closest to a good explanation that I've found is Fast String Searching With Suffix Trees , but he glosses over various points and some aspects of the algorithm remain unclear.
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What is the purpose of python's inner classes?
... methods of the outer class — they will see the outer's self without any extra work required (just use a different identifier where you would typically put the inner's self; like innerself), and will be able to access the outer instance via that.
– Evgeni Sergeev
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How to solve “Could not establish trust relationship for the SSL/TLS secure channel with authority”
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A little extra explanation can be found here : blog.effectivemessaging.com/2015_09_01_archive.html
– granadaCoder
Oct 21 '16 at 13:18
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How can I check if a background image is loaded?
...s are stored. If you're referring to cache, remember that you're adding an extra HTTP request and all clients might not have cache enabled.
– HyderA
Feb 20 '11 at 17:09
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Inject errors into already validated form?
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Mostly complete. One extra note is that if is_valid() was not called, then you'll need to set form._errors = ErrorDict()
– jacob
Jan 13 '14 at 17:08
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How to create a checkbox with a clickable label?
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No need to assign an id to every checkbox (great!).
No need to use the extra attribute in the <label>.
The input's clickable area is also the label's clickable area, so there aren't two separate places to click that can control the checkbox - only one, no matter how far apart the <inpu...
Why does installing Nokogiri on Mac OS fail with libiconv is missing?
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why do I need the extra "--" in the middle of the gem install command?
– Rembrandt Q. Einstein
Feb 12 '15 at 19:19
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