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How to detect a loop in a linked list?
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You can make use of Floyd's cycle-finding algorithm, also known as tortoise and hare algorithm.
The idea is to have two references to the list and move them at different speeds. Move one forward by 1 node and the other by 2 nodes.
If the linked list has a loop they
will definitel...
Embed YouTube video - Refused to display in a frame because it set 'X-Frame-Options' to 'SAMEORIGIN'
...6N9782MzFQ (browser's URL).
You should use the embed endpoint, so the URL now should be something like https://www.youtube.com/embed/P6N9782MzFQ. Use this value as the URL in the src attribute inside the iframe tag in your HTML code, for example:
<iframe width="853" height="480" src="https://ww...
Get object by id()? [duplicate]
...cast(id(a), ctypes.py_object).value
output:
hello world
If you don't know whether the object is still there, this is a recipe for undefined behavior and weird crashes or worse, so be careful.
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Counting null and non-null values in a single query
...n this as a "run once query to spot how many nulls we have", I don't even know why ^^', going to correct, thanks.
– Alberto Zaccagni
Aug 13 '09 at 13:29
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How to “undelete” a deleted folder in Subversion / TortoiseSVN?
...itory, right-click on the parent folder where your deleted folder existed. Now, Show Log of the parent folder, and select the previous revision where you committed the delete operation. You'll have a list and right click on the folder from the revision info and select Update to this Revision.
You a...
Installing rmagick on Ubuntu
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As I commented below, worked fine for me just now with just libmagickwand-dev and I didn't need any additional packages. At least for Magick::ImageList.from_blob, Magick::ImageList.resize, and Magick::ImageList.write. Not sure about other methods.
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Convert System.Drawing.Color to RGB and Hex Value
...g it may have some problem and need your kind advice. In addition, I dont know whether there is any existing method to do the same.
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SQL MAX of multiple columns?
...M (VALUES (1,2), (5,3), (1,4)) as tableOfValues(columnName1, ColumnName2) Now you can understand why that sample query has AS value(v) in it. My final query looked like this: SELECT Max(currentValues) as Max FROM (VALUES (12), (25), (35)) AS allCurrents(currentValues) It will pick the max val...
How to “inverse match” with regex?
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Don't know which language it is written in, but worked like a charm in Sublime text to clean up my test data. Thanks!
– Matthias dirickx
May 4 '17 at 11:21
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How different is Scrum practice from Agile Practice? [duplicate]
... originally been the case when the term was coined, but it certainly is by now.
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