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Cluster analysis in R: determine the optimal number of clusters
... maximum curvature. For discrete data, it is the point with maximum second order central difference (analog to max. second order derivative for continuous data). See stackoverflow.com/a/4473065/1075993 and stackoverflow.com/q/2018178/1075993. I guess that other graphical methods could be converted t...
Jenkins / Hudson environment variables
...corner: The jenkins master caches the environment variables from slaves in order to patch the customizations. So if you change environment variables on a slave (system or user), you need to restart the master to update the slaves config.
– Thinkeye
Mar 25 '15 a...
No generic implementation of OrderedDictionary?
There doesn't appear to be a generic implementation of OrderedDictionary (which is in the System.Collections.Specialized namespace) in .NET 3.5. Is there one that I'm missing?
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Physical vs. logical / soft delete of database record?
...he isDeleted column, I suggest the usage of two different tables: one with orders and another with deleted orders. In that case, you will have to maintain both the table, but in reality, it is very easy to maintain. When you write UPDATE statement to the isDeleted column, write INSERT INTO another t...
Iterator Loop vs index loop [duplicate]
...urn
}
Advantages: more generic, works for all containers (even the new unordered associative containers, can also use different strides (e.g. std::advance(it, 2));
Disadvantages: need extra work to get the index of the current element (could be O(N) for list or forward_list). Again, the loop cont...
What are JavaScript's builtin strings?
...with that funny snippet. I have written that piece of code just for fun in order to send it to my wife on February 14 :) Having only Chrome installed on the laptop I had no options to check how it works in Firefox and IE. Moreover, I haven't really expected that toString() representation of build-in...
java.lang.ClassNotFoundException: Didn't find class on path: dexpathlist
...nstant Run is still so buggy to the extend that you have to turn it off in order to avoid nasty surprises...
– Ognyan
Oct 1 '17 at 10:54
2
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Does the Java &= operator apply & or &&?
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In order to avoid redundancies (still allowing for short-circuiting), you can simply write a=a&&b().
– Unai Vivi
Sep 8 '12 at 9:39
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What is an Endpoint?
...he OAuth 1.0a community spec). This is a URI that you send a request to in order to obtain an unauthorized Request Token from the server / service provider.
Resource Owner Authorization URI (called the User Authorization URL in the OAuth 1.0a community spec). This is a URI that you direct the user ...
How to read and write INI file with Python3?
...es
When writing out config files, ConfigObj preserves all comments and the order of members and sections
Many useful methods and options for working with configuration files (like the 'reload' method)
Full Unicode support
It has some draw backs:
You cannot set the delimiter, it has to be =… (p...