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What is a good Hash Function?
What is a good Hash function? I saw a lot of hash function and applications in my data structures courses in college, but I mostly got that it's pretty hard to make a good hash function. As a rule of thumb to avoid collisions my professor said that:
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SSH Private Key Permissions using Git GUI or ssh-keygen are too open
Recently I've been unable to clone or push to github, and I'm trying to find the root cause.
25 Answers
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What is a monad?
...t necessarily “good”. They are a pattern which is sometimes beneficial and sometimes not.
Do note that the monadic patten can be combined in a different way:
[1,2,3].flatMap(a => [a + 1].flatMap(b => b != 3 ? [b] : []))
Here the binding is nested rater than chained, but the result is the ...
What is NODE_ENV and how to use it in Express?
...ode application is run, it can check the value of the environment variable and do different things based on the value. NODE_ENV specifically is used (by convention) to state whether a particular environment is a production or a development environment. A common use-case is running additional debuggi...
How to implement the --verbose or -v option into a script?
I know the --verbose or -v from several tools and I'd like to implement this into some of my own scripts and tools.
9 A...
How to colorize diff on the command line?
...a diff, how can I colorize it so that it looks good? I want it for the command line, so please no GUI solutions.
14 Answers...
How do you compare structs for equality in C?
How do you compare two instances of structs for equality in standard C?
11 Answers
11
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SQLite INSERT - ON DUPLICATE KEY UPDATE (UPSERT)
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@Smith I meant using plain UPDATE and INSERT statements and checking return value.
– codeholic
Nov 17 '13 at 14:47
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Utility classes are evil? [closed]
... good object-oriented design, most classes should represent a single thing and all of its attributes and operations. If you are operating on a thing, that method should probably be a member of that thing.
However, there are times when you can use utility classes to group a number of methods togethe...
Split code over multiple lines in an R script
... issue, try
R> setwd(paste("~/a/very/long/path/here",
"/and/then/some/more",
"/and/then/some/more",
"/and/then/some/more", sep=""))
which also illustrates that it is perfectly fine to break code across multiple lines.
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