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How to split a string in Haskell?
... Could not find module ‘Text.Regex’ Perhaps you meant Text.Read (from base-4.10.1.0)
– Andrew Koster
Jul 2 at 15:58
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Scrolling down both parts of a split-window at the same time in Vim
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From the command line:
vim -O file1 file2 -c 'windo set scb!'
-O = open side by side.
-c = what follows in quotes is treated as a vim option.
'windo' = apply to all panels.
'scb' = shorthand for scrollbind. Saves...
Ruby: Merging variables in to a string
... Sorry, maybe I simplified the problem too much. The String will be pulled from a database, and the variable dependant a number of factors. Normally I would use a replace for 1 or two varibles, but this has the potential to be more. Any thoughts?
– FearMediocrity
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Why is require_once so bad to use?
...ce to analyse the system calls that are being made.
Before opening a file from require_once the following system calls are made:
time(NULL) = 1223772434
lstat64("/home", {st_mode=S_IFDIR|0755, st_size=4096, ...}) = 0
lstat64("/home/fbarnes", {st_mode=S_IFDIR|0755, st_s...
In Scala, what exactly does 'val a: A = _' (underscore) mean?
...huck says in his answer, this initialises the variable to a default value. From the Scala Language Specification:
0 if T is Int or one of its subrange types,
0L if T is Long,
0.0f if T is Float,
0.0d if T is Double,
false if T is Boolean,
() if T is Unit,
null for all other types T.
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Ruby on Rails: How do I add a not null constraint to an existing column using a migration?
...onstraint, then rollback the migration, it will REMOVE the null constraint from any field that already had it.
– jpw
Jan 16 '19 at 18:50
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Guava: Why is there no Lists.filter() function?
...s returning a new materialised list, which is actually what I would expect from a filter method for lists as opposed to the one on Iterable.
– Felix Leipold
May 27 '15 at 22:27
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What is the fastest factorial function in JavaScript? [closed]
...n method is Lanczos's one
Here is an implementation in JavaScript (ported from a calculator I wrote months ago):
function factorial(op) {
// Lanczos Approximation of the Gamma Function
// As described in Numerical Recipes in C (2nd ed. Cambridge University Press, 1992)
var z = op + 1;
var p = ...
javascript: recursive anonymous function?
... => x > 0 ? U (f) (log (x - 1)) : 0)
How to remove self-reference from an existing function using U combinator
Here I'll show you how to take a recursive function that uses a reference to itself and change it to a function that employs the U combinator to in place of the self reference
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How to assertThat something is null with Hamcrest?
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Use the following (from Hamcrest):
assertThat(attr.getValue(), is(nullValue()));
In Kotlin is is reserved so use:
assertThat(attr.getValue(), `is`(nullValue()));
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