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Why can a function modify some arguments as perceived by the caller, but not others?
I'm trying to understand Python's approach to variable scope. In this example, why is f() able to alter the value of x , as perceived within main() , but not the value of n ?
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How do HashTables deal with collisions?
...ll full then the hash table can increase the number of buckets that it has and then redistribute all the elements in the table. The hash function returns an integer and the hash table has to take the result of the hash function and mod it against the size of the table that way it can be sure it will...
PHP Function with Optional Parameters
... an array" suggestion - take a look at Walf's answer to a similar question and the more in-depth example in the same thread
– DJDave
Mar 16 '16 at 13:07
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What is in your .vimrc? [closed]
Vi and Vim allow for really awesome customization, typically stored inside a .vimrc file. Typical features for a programmer would be syntax highlighting, smart indenting and so on.
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Has anyone used Coffeescript for a production application? [closed]
...ly an app for browsing certain kinds of data.
We use CoffeeScript as a command-line compiler (not on the server, which we'd eventually like to do).
PROS (for us):
It gets rid of a lot of needless clutter in javascript (eg braces, semi-colons, some brackets) to the extent that the code is cleaner ...
Haskell: Lists, Arrays, Vectors, Sequences
I'm learning Haskell and read a couple of articles regarding performance differences of Haskell lists and (insert your language)'s arrays.
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Does Python have a ternary conditional operator?
...rst condition is evaluated, then exactly one of either a or b is evaluated and returned based on the Boolean value of condition. If condition evaluates to True, then a is evaluated and returned but b is ignored, or else when b is evaluated and returned but a is ignored.
This allows short-circuiting ...
Tracking CPU and Memory usage per process
... more CPU cycles than I want it to. The problem is - it happens in bursts, and just looking at the task manager doesn't help me as it shows immediate usage only.
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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 ...